26917

Appears in sequences

• Expansion of Product_{m>=1} (1 + q^m)^(2*m).at n=14A026011
• Number of partitions in parts not of the form 19k, 19k+1 or 19k-1. Also number of partitions with no part of size 1 and differences between parts at distance 8 are greater than 1.at n=49A035970
• Odd composites (including 1 in the count) where the number 1 mod 4 equals the number 3 mod 4.at n=11A093180
• a(n) = 7 + floor((1 + Sum_{j=1..n-1} a(j))/4).at n=37A120165
• Row sums of triangle A137855.at n=11A137856
• Triangle read by rows: T(n,k) is the number of even permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).at n=32A145881
• Triangle read by rows: T(n,k) is the number of even permutations of {1,2,...,n} with no fixed points and having k excedances (n>=1; k>=1).at n=33A145881
• Numbers k such that k, k+1, k+2, k+3 have 2, 3, 4, 5 prime factors respectively, counted with multiplicity.at n=36A363391