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%I #18 Feb 07 2023 15:14:37
%S 0,0,0,0,1,1,3,10,25,82,283,1106
%N Number of prime knots on n crossings having Arf invariant 0.
%H KnotInfo, <a href="https://knotinfo.math.indiana.edu/">Table of Knots</a>
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/ArfInvariant.html">Arf Invariant</a>
%F a(n) = A002863(n) - A131434(n). - _Andrew Howroyd_, Jan 15 2023
%e For n <= 6, 5_2 and 6_1 are the only prime knots with Arf Invariant 0. (The unknot is not considered prime nor composite, much like the integer 1.) - _Emma Joe Anderson_, Jan 15 2023
%Y Cf. A002863, A131434.
%K nonn,more
%O 1,7
%A _Eric W. Weisstein_, Jul 10 2007
%E a(11)-a(12) added using data from the KnotInfo database (see Links above) by _Emma Joe Anderson_, Jan 15 2023
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