25.3.16

Sequencing The Unsequencable

Three sequences that I submitted to the OEIS (Online Encyclopedia of Integer Sequences) have now been approved.

The first sequence is the sequence generated by powers of 2 mod n when n is the product of 2 distinct safe primes. The sequence number is A269453. Here are the first few terms of the sequence:

12, 20, 30, 44, 33, 92, 110, 116, 69, 174, 164, 230, 212, 246, 290, 318, 332, 356, 410, 253, 452, 249, 530, 534, 524, 638, 678, 692, 716, 830, 393, 902, 764, 890, 932, 956, 1038, 1166, 1130, 537, 1004, 573, 1334, 1124, 1310, 1172, 1398, 717, 753, 1436, 1730, 913, 1886, 1686, 1790