Sierpinski's triangle (Pascal's triangle mod 2) converted to decimal.
1, 3, 5, 15, 17, 51, 85, 255, 257, 771, 1285, 3855, 4369, 13107, 21845, 65535, 65537
2 seqfan posts
Thu Aug 12 19:12:31 CEST 2010 [seqfan] Re: parity of binomials and some carryless products A175669 - A175672