50022

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=2, r=3, I={1}.at n=15A080010
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1100-0111-1100 pattern in any orientation.at n=24A146679
• a(n) = (2*n^3 + 5*n^2 + 7*n)/2.at n=35A162264
• Number of nondecreasing sequences of 5 1..n integers with no element dividing the sequence sum.at n=23A212872
• Triangle T(n,k) defined by Sum_{k=1..n} T(n,k)*u^k*x^n/n! = exp(Sum_{n>0} u*sigma(n)*x^n/n!).at n=41A338871