## Adios & Thanks for the memories, Fry’s!

Today I was saddened to hear that Fry’s Electronics is closing all their stores all across the US! In this post, Fry’s was not just … Read More ›

My Sunday afternoon hack – “Bernify your pictures!” http://geekraj.com/bernify I made this web-based tool to add Bernie to your pictures. I forked and tinkered with … Read More ›

## Squares ending in xyxyxyxyxy

If a square number () ends with xyxyxyxyxy, then xy should be one of 21, 29, 61, 69, 84, [Inspired by this Fermat’s Library LinkedIn … Read More ›

## Limiting Ratio of Tribonacci Numbers & Beyond

The Tribonacci series is 1, 1, 2, 4, 7, 13, 24, 44, … In this article, we find the limiting value of adjacent numbers.

## Some Problems from Lilavati by Bhaskara II

A friend of mine posted this on LinkedIn. Quite interesting problems. It should be solvable at 8-10th grade levels. Solutions 1. Number of Apes Let … Read More ›

## An Angel Function!

I was playing with Desmos and I needed some function that would do some interesting things around a circle. I was tinkering, and accidentally found … Read More ›

## Why Coding Skills Matter?

In this era of plug and play, copy/paste programming, many programmers do not take the time to hone their coding skills, which can be detrimental … Read More ›

## Game of Life on Colorduino

It is Pi day, and I don’t want to let it go by without writing a blog post! So today I want to share with … Read More ›

## Arduino Christmas Ornament

I’ve been wanting to tinker with RGB LED matrix for a while, and finally was able to do so earlier this month. It was fun … Read More ›

## Drawing Hilbert curves with an NXT Plotter

In early September, my son Kevin built a plotter using NXT, using the design from the book “The Unofficial LEGO MINDSTORMS NXT 2.0 Inventor’s Guide” … Read More ›

## On 2^n – 1

Picking up from my last blog post, where we observed 255 = 15 x 17, I present to you some cool observations from the telescoping multiplicative series obtained from 2^n-1.