190950

Appears in sequences

• Number of permutations satisfying -k<=p(i)-i<=r and p(i)-i not in I, i=1..n, with k=1, r=4, I={3}.at n=20A079975
• When A032523 is a maximum; or, A091657 less duplicates.at n=25A091658
• a(n) = 361*n^2 - 19.at n=22A158595
• Number of nX3 0..3 arrays with no element equal to zero plus the sum of elements to its left or one plus the sum of elements above it or zero plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=9A241393
• a(n) = n! * Sum_{k=0..n} k^(n-k) * (n-k)^k/k!.at n=6A351768