40520

Appears in sequences

• Number of compositions of n into a sum of odd primes.at n=47A002124
• a(n) = -a(n-1) + 7*a(n-2) + 3*a(n-3) with a(0) = a(1) = 0, a(2) = 1.at n=12A137232
• Number of partitions of n such that the number of parts is divisible by the smallest part.at n=40A168657
• Table, read by rows, of the number of quivers of affine type A_(n-1) according to the parameter k (n >= 2, 1 <= k <= [n/2]).at n=32A189942
• a(n) is the smallest position in the subtract-a-factorial game for which the value of the Sprague-Grundy function (or nim-value) is n.at n=7A355556
• a(n) = [x^n] Product_{k=0..n-1} (1 + k*x)/(1 - k*x).at n=5A383767
• Square array A(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of Product_{j=0..k} (1 + j*x)/(1 - j*x).at n=50A383900
• Expansion of Product_{k=0..4} (1 + k*x)/(1 - k*x).at n=5A383911