%I #5 Mar 30 2012 17:34:00
%S 1,1,3,2,6,4,11,7,18,12,29,20,42,33,59,54,78,88,101,143,130,232,161,
%T 376,198,609,239,986,282,1596,329,2583,382,4180,441,6764,502,10945,
%U 569,17710,640,28656,713,46367,792,75024,875,121392,964,196417,1061,317810,1162,514228,1265,832039,1372
%N First differences of A160794.
%C Length of the n-th edge of a square spiral related to Fibonacci numbers and prime numbers.
%Y Cf. A000040, A000045, A160791, A160793, A160794.
%K easy,nonn
%O 1,3
%A _Omar E. Pol_, May 29 2009
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