The numerators of the convergents to the recursion x=1/(x^2+1).
1, 1, 4, 25, 1681, 5317636, 66314914699609, 8947678119828215014722891025
3 seqfan posts
Sat Oct 23 09:23:54 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 08:39:06 CEST 2010 [seqfan] Re: CROSSREFS
Sat Oct 23 00:12:52 CEST 2010 [seqfan] CROSSREFS
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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