72228

Appears in sequences

• Number of permutations p of 1,2,...,n satisfying |p(i+2)-p(i)|<>5 and |p(j+5)-p(j)|<>2 for all i=1..n-2, j=1..n-5.at n=9A189567
• Number of ways to place n nonattacking composite pieces rook + rider[2,5] on an n X n chessboard.at n=8A189856
• G.f. A(x) satisfies: 1 = Sum_{n>=0} x^n*A(-x)^A131507(n), where A131507 is defined as "2*n+1 appears n times.".at n=9A193040
• Number of partitions of n having standard deviation σ > 5.at n=52A238657
• Numbers k such that k^7 - 1 and k^7 + 1 are semiprimes.at n=8A279272