122502
domain: N
Appears in sequences
- a(n) = a(n-1) + a(n-2) + n^2 for n >= 3, a(1)=2, and a(2)=5.at n=18A179992
- a(n) = Sum_{k=1..n} F(n mod k) where F = A000045, the Fibonacci numbers.at n=48A198259
- Number of 1's in all compositions of n into odd parts.at n=22A239342
- Expansion of (4 + 15*x - 35*x^2 + 20*x^3 - 2*x^5)/(1 - x)^5.at n=30A257600
- a(n) = (n^4 + 20*n^3 + 125*n^2 + 250*n + 24)/12.at n=30A257601