42920

Appears in sequences

• a(n) = Sum_{k=0..2*n-1} T(n,k) * T(n,k+1), with T given by A026584.at n=6A027283
• a(n) = floor( exp(1/16)*n! ).at n=7A030907
• Numbers k such that 2^k - F(k) is prime, where F(n) is the n-th Fibonacci number.at n=20A074716
• a(n) = (sum of first n primes) * n.at n=28A167214
• Number of partitions of n containing a clique of size 1.at n=41A183558
• a(n) = n*(5n^2 + 3n + 4) / 6.at n=37A203551
• Number of nonnegative solutions to (x_1)^2 + (x_2)^2 + ... + (x_7)^2 <= n.at n=39A341402