232960

Appears in sequences

• a(n) = ((6*n+8)(!^6))/8(!^6), related to A034689 (((6*n+2)(!^6))/2 sextic, or 6-factorials).at n=4A053101
• a(n) = 2^(n-3)*(n+2)*(n+3)*(n+4)/3.at n=11A080930
• Four times triple factorials (3*n-2)!!! with leading 1 added.at n=7A091541
• Riordan array (1/(1+2xc(-2x)),xc(-2x)/(1+2xc(-2x))), c(x) the g.f. of A000108.at n=38A114193
• A certain partition array in Abramowitz-Stegun order (A-St order), called M_3(4)/M_3.at n=46A134150
• Number of 2-elements orbits of S3 action on irreducible polynomials of degree 3n, n > 0, over GF(2).at n=23A165920
• Riordan array (c(2x)^2,xc(2x)), c(x) the g.f. of A000108.at n=48A167432
• Total number of graceful labelings of the n-pan graph.at n=11A333729
• a(n) = Sum_{k=1..n} k * lcm(k,n).at n=31A344508
• Irregular triangle T(n,k) read by rows in which n-th row lists in colex order all series-reduced tree degree sequences D of n nodes encoded as t = Product_{d in D} prime(d); n >= 4, 1 <= k <= A002865(n-2).at n=35A345970
• Number of digraphs on n labeled nodes with a global source (or sink).at n=4A350792
• Denominators of rational coefficients which are ratio of Brent's coefficients -A[n,2]/A343480.at n=32A380948