74900
domain: N
Appears in sequences
- Expansion of g.f. (1 - 2*x^2 - 3*x^3)/((1 - x^3)*(1 - 2*x)).at n=19A063823
- Number of subsets of {1,2,3,...,n} that sum to 0 mod 7.at n=19A068013
- Number of subsets of {1,2,3,...,n} that sum to 0 mod 14.at n=20A068035
- a(n) = Sum_{ d divides n } (n/d)^(2d).at n=14A073705
- Left border of triangle A137629.at n=39A137631
- a(n) = a(n-3) + 2^(n-4) with a(1) = 1, a(2) = 2, a(3) = 1.at n=19A166578
- a(n) = Sum_{d|n, n/d odd} (n/d)^d.at n=29A333824