943250
domain: N
Appears in sequences
- Number of permutations p of 1,2,...,n satisfying |p(i+4)-p(i)|<>5 and |p(j+5)-p(j)|<>4 for all i=1..n-4, j=1..n-5.at n=10A189570
- Number of ways to place n nonattacking composite pieces rook + rider[4,5] on an n X n chessboard.at n=9A189861
- Numbers k such that A048675(sigma(k)) is equal to A048675(2*k).at n=25A331751