User:Alan Griffiths

I am a computer systems technical architect in the UK. I have a particular interest in Number Theory as a hobby. I enjoy writing computer programs which explore the limits of number sequences, and using the power of the computers that I have access to.

Contributions to OEIS

1. I have contributed to the two related sequences, which relate to the position of the rightmost zero digit in the decimal representation of powers of two, A031142, and A031143 by adding an extra 5 entries to each of them (so far).
   
   
2. Also created a new sequence A211133 which lists the odd-sides which belong to multiple Primitive Euler Bricks. The only odd-side I've found so far which belongs to three P.E.B's is 4150575 which belongs to:
   
   

(4150575, 3982680, 5716352),

(4150575, 5716352, 24998400), and,

(4150575, 71609720, 171585216).

All the other entries found so far only belong to two P.E.B's.