192456

Appears in sequences

• a(n) = 10*n^3 - 6*n^2.at n=27A006592
• a(n) = Sum_{k=0..m} (k+1) * A026082(n, k), where 0 <= k <= m, m=n for n=0,1,2,3; m=2n for n >= 4.at n=10A027319
• Duplicate of A027319.at n=10A027320
• Expansion of 1/(1-3*x)^8; 8-fold convolution of A000244 (powers of 3).at n=5A036221
• a(n) = 3^5 * binomial(n+4, 5).at n=7A113335
• Smallest number having exactly n ones in binary representation and also exactly n prime factors (counted with multiplicity).at n=10A115156
• Number of magic labelings of the Petersen graph with magic sum n.at n=20A125196
• Number of (w,x,y,z) with all terms in {1,...,n} and w<2x and y>3z.at n=36A212510
• Expansion of Product_{k>=1} (1 + 3^(k-1)*x^k).at n=11A344062
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = n^2 x and t(x) = 2x+1. See Comments.at n=26A375042
• Triangle read by rows: T(n,k) = 3^(n-k)*C(2*n,n-k).at n=22A386825