[seqfan] A007117 Extension

Hans Havermann pxp at rogers.com
Wed Feb 17 06:04:39 CET 2010


a(n)*2^(n+2) + 1 divides n-th Fermat number.
0, 0, 1, 8, 1024, 5, 1071, 116503103764643, 1209889024954, 1184,  
11131, 39, 7, 82731770

I suppose everyone has heard the news about the finding of a factor  
for F14 two weeks ago. So, is there enough room to add another six  
terms to A007117? I make them out to be:

1784180997819127957596374417642156545110881094717, 9264, 3150,  
59251857, 13, 33629





More information about the SeqFan mailing list