26667

Appears in sequences

• Coefficient of q^2 in nu(n), where nu(0) = 1, nu(1) = b and, for n >= 2, nu(n) = b*nu(n-1) + lambda*(1 + q + q^2 + ... + q^(n-2))*nu(n-2) with (b,lambda) = (3,1).at n=9A074362
• Numbers k such that k^2 is the concatenation of two numbers 8*m and m.at n=5A115552
• a(n) = (8*10^n + 1)/3.at n=4A199688
• Number of partitions of n such that the number of parts having multiplicity >1 is a part and the number of distinct parts is a part.at n=46A241409
• Triangle read by rows: T(n,k) is the number of graphs with n vertices and skewness k (n >= 1 and k >= 0).at n=31A294224
• Expansion of Product_{k>=1} 1/(1 - x^k)^(k*binomial(k+2,3)).at n=8A317019
• Nonsquarefree numbers k such that A003415(k) divides A276086(k), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=38A371085