132300

Appears in sequences

• a(n) = A029571(n) / 6.at n=10A029587
• Numbers k such that n | sigma_10(k) + phi(k)^10.at n=21A055704
• Numerator of 1/det(M) where M is the n X n matrix with M[i,j] = 1/lcm(i,j).at n=6A060841
• Consider Pascal's triangle A007318; a(n) = product of terms at +45 degrees slope with the horizontal.at n=10A073617
• Numbers k such that the sum of factorials of the digits of k equals the sum of the primes from the smallest prime factor of k to the largest prime factor of k.at n=7A074256
• Numbers n that raised to the powers from 1 to k (with k>=1) are multiple of the sum of their digits (n raised to k+1 must not be a multiple). Case k=11.at n=24A135196
• Numbers with prime factorization p^2*q^2*r^2*s^3 where p, q, r, and s are distinct primes.at n=1A190382
• Molecular topological indices of the graph join C_n + C_n of cycle graphs.at n=24A192848
• Number of (n+2) X 3 binary arrays avoiding patterns 001 and 101 in rows and columns.at n=32A202195
• a(n) = v(n)/A000178(n), v = A093883 and A000178 = (superfactorials).at n=4A203469
• Triangle T(n,k) giving number of degree-2n permutations which decompose into exactly k cycles of even length, k=0..n.at n=18A204420
• Triangle T(n,k), 0 <= k <= n, given by (0, 1, 0, 2, 0, 3, 0, 4, 0, 5, ...) DELTA (1, 2, 3, 4, 5, 6, 7, 8, 9, ...) where DELTA is the operator defined in A084938.at n=33A211608
• a(n) = 27*(n - 6)^2 + 4*(n - 6)^3 = ((n - 6)^2)*(4*n + 3).at n=36A245032
• a(n) = (prime(n) - 7)^2 * (4*prime(n) - 1).at n=11A245035
• Triangle read by rows: number of idempotents of rank k in Brauer monoid B_n.at n=38A256036
• Number of n X 2 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.at n=4A269103
• Number of n X 5 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.at n=1A269106
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.at n=16A269109
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally or vertically adjacent neighbor totalling three no more than once.at n=19A269109
• T(n,k)=Number of nXk 0..3 arrays with some element plus some horizontally, diagonally or antidiagonally adjacent neighbor totalling three no more than once.at n=19A269201