25504

Appears in sequences

• Maximal value of sum(p(i)p(i+1),i=1..n), where p(n+1)=p(1), as p ranges over all permutations of {1,2,...,n}.at n=41A110610
• Number of ways of placing n rooks on an n X n chessboard with the topology of a Klein bottle.at n=8A134983
• Number of partitions of n, where the difference between the number of odd parts and the number of even parts is 10.at n=49A240019
• Number of compositions of n with exactly 2 transitions between different parts.at n=39A244714
• a(n) = Sum_{k=0..n} C(n,k) * (2 + 3^k)^(n-k).at n=5A244756
• Number of integer partitions of n whose mean is not an integer.at n=38A349156