524161

Appears in sequences

• a(n) = (1/4)*(n^2 - 5*n + 2)*(n-2)! + 1.at n=8A173038
• Triangle T(n, k) = n!*(1/k)*binomial(n-1, k-1)*binomial(n, k-1) - n! + 1, read by rows.at n=23A174694
• Triangle T(n, k) = n!*(1/k)*binomial(n-1, k-1)*binomial(n, k-1) - n! + 1, read by rows.at n=25A174694
• a(n) = abs(2^n-127).at n=19A176303
• a(n) = n*(n + 1)*(5*n^2 + 5*n - 4)/12.at n=33A264853
• Number of compositions of n that are neither strictly increasing nor strictly decreasing.at n=20A337481
• a(n) is the smallest integer k > 1 that satisfies k mod j <= 1 for all integers j in 1..n.at n=16A361246
• a(n) is the smallest integer k > 1 that satisfies k mod j <= 1 for all integers j in 1..n.at n=17A361246