This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A081148 #13 Jan 11 2024 06:33:10 %S A081148 1,1,0,1,0,4,0,9,0,24,0,62,0,162,0,447,0,1234,0 %N A081148 Number of odd cycles in range [A014137(n-1)..A014138(n-1)] of permutation A057505/A057506. %C A081148 For the convenience of the range notation above, we define A014137(-1) and A014138(-1) as zero. %H A081148 Antti Karttunen, <a href="/A089408/a089408.c.txt">Counted with the help of this C program</a>. %F A081148 a(n) = A081153(n) + A081155(n) = A057507(n) - A081150(n). %Y A081148 Bisection: A081149. %Y A081148 Cf. A081153, A081155, A057507, A081150. %Y A081148 Cf. A014137, A014138, A057505, A057506. %K A081148 nonn,more %O A081148 0,6 %A A081148 _Wouter Meeussen_ and _Antti Karttunen_, Mar 10 2003