33117

Appears in sequences

• Number of nonempty subsets of {1,2,...,n} in which exactly 3/5 of the elements are <= (n-3)/3.at n=25A048034
• a(n) = 49*n^2 - 7.at n=25A158484
• a(n) = (prime(n))^2 - (nonprime(n))^2.at n=42A161757
• Total number of colors in all colored integer partitions of n using all colors of an initial color palette such that a color pattern for part i has i distinct colors in increasing order.at n=7A327118
• Numbers which are the product of two S-primes (A057948) in exactly three ways.at n=36A343828
• Triangle T(n,k) read by rows: the number of symmetric binary n X n matrices with k ones and no all-1 2 X 2 submatrix.at n=62A350189
• G.f. satisfies A(x) = 1 + x*A(x)^2/(1 - x^2*A(x)^4).at n=9A365246