45665
domain: N
Appears in sequences
- a(n) = Sum_{k=0..n} C(n-k,3k).at n=20A003522
- Number of compositions of n such that two adjacent parts are not equal modulo 2.at n=28A062200
- The number of rectangles (orthogonal or not) with corners on an n X n grid of points.at n=17A085582
- Quadrisection of a generalized Padovan sequence.at n=15A099099
- Quintisection of 1/(1-x^3-x^4).at n=12A099101
- a(n) = Sum_{k=0..floor(n/2)} binomial(2*n-k,3*k).at n=10A392400