241080

Appears in sequences

• Triangle of the square of the normalized, unsigned Stirling matrix of the first kind.at n=24A027477
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and no two or three adjacent elements summing to zero.at n=35A200431
• Triangle read by rows, k!*s_2(n, k) where s_m(n, k) are the Stirling-Frobenius cycle numbers of order m; n >= 0, k >= 0.at n=32A225475
• a(n) = (1/5)*A290909(n), n>= 0.at n=10A290910
• a(n) = 144*n^2 - 24*n (n>=1).at n=40A305072
• Array read by antidiagonals: T(n,k) is the number of permutations of k indistinguishable copies of 1..n with exactly 2 local maxima.at n=17A334773
• Numbers such that the two adjacent integers are a prime and the square of another prime.at n=33A347194
• Positive integers of the form k^2 - 1 that are the product of two other distinct positive integers of the form k^2 - 1.at n=28A372497