One-dimensional cellular automaton 'sigma-minus' (Rule 90): 000,001,010,011,100,101,110,111 -> 0,1,0,1,1,0,1,0.
1, 5, 17, 85, 257, 1285, 4369, 21845, 65537, 327685, 1114129, 5570645, 16843009
1 seqfan posts
Tue Apr 14 09:37:38 CEST 2009 [seqfan] Re: confused about toothpick sequence A139250!