780780

Appears in sequences

• a(n) = 28*(n+1)*binomial(n+3,8)/3.at n=7A027793
• a(n) = 12*(n+1)*binomial(n+3,9).at n=6A027794
• Numbers with exactly 6 distinct prime divisors {2,3,5,7,11,13}.at n=22A147573
• Triangle where the g.f. for row n equals d^n/dx^n (1+x+x^2)^n / n! for n>=0, as read by rows.at n=51A220178
• Number of n-element subsets of [n+8] having an even sum.at n=18A282084
• T(n, k) = Sum_{j=0..k} (-1)^j*binomial(2*k, j)*(k - j)^(2*n)/k!, triangle read by rows, n >= 0 and 0 <= k <= n.at n=31A304334
• a(n) = A108951(n) * A276086(A108951(n)).at n=21A324887
• Triangle T(n,k) (1 <= k <= n) read by rows: T(n,k) = c_n * F(k)/F(k+2) where c_n = LCM of F(3), F(4), ... F(n+2) (and F() are the Fibonacci numbers).at n=34A374667