References to A000021

Number of positive integers <= 2^n of form x^2 + 12 y^2.
1, 1, 2, 2, 6, 9, 17, 30, 54, 98, 183, 341, 645, 1220, 2327, 4451, 8555, 16489, 31859


7 seqfan posts

Sat Apr 14 19:06:57 CEST 2012    [seqfan] Re: A000021: Number of positive integers <= 2^n of form x^2 + 12 y^2.
Sat Apr 14 19:06:07 CEST 2012    [seqfan] Re: A000021: Number of positive integers <= 2^n of form x^2 + 12 y^2.
Sat Apr 14 18:50:23 CEST 2012    [seqfan] A000021: Number of positive integers <= 2^n of form x^2 + 12 y^2.
Fri Oct 29 05:35:16 CEST 2010    [seqfan] Implementing first 500 sequences in Java
Sun Jul 18 15:51:30 CEST 2010    [seqfan] Re: Excess permutation left moves over right moves
Sun Jul 18 15:16:46 CEST 2010    [seqfan] Re: Excess permutation left moves over right moves
Sun Feb 8 21:50:46 CET 2009    [seqfan] Re: any value storing constants of power ratios?

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