Number of positive integers <= 2^n of form x^2 + 16y^2.
1, 1, 2, 2, 4, 8, 13, 25, 44, 83, 152, 286, 538, 1020, 1942, 3725, 7145, 13781, 26627
2 seqfan posts
Fri Oct 29 05:35:16 CEST 2010 [seqfan] Implementing first 500 sequences in Java
Sun Feb 8 21:50:46 CET 2009 [seqfan] Re: any value storing constants of power ratios?
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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