40165

Appears in sequences

• Number of bipartite partitions.at n=21A002762
• Number of (n+2) X 6 0..1 matrices with each 3 X 3 subblock idempotent.at n=17A224555
• Numbers n such that 3*4^n - 1 is prime.at n=23A272057
• Number of prime parts in the partitions of n into 8 parts.at n=49A309437
• Smallest number k with A355915(k) = n.at n=41A356792
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] exp(x+y) / (exp(x) + exp(y) - exp(x+y))^4.at n=47A382674
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where A(n,k) = n! * k! * [x^n * y^k] exp(x+y) / (exp(x) + exp(y) - exp(x+y))^4.at n=52A382674
• a(n) = 9 - 28 * 2^n + 20 * 3^n.at n=7A382677