41668
domain: N
Appears in sequences
- a(n) = (n+1)*(n^2+n+2)/2; g.f.: (1 + 2*x^2) / (1 - x)^4.at n=43A006000
- Denominators of continued fraction convergents to sqrt(662).at n=12A042273
- Number of 0's in the binary expansion of A127962(n).at n=30A127964
- Sum of squares of four consecutive primes.at n=24A133524
- Number of nondecreasing integer sequences of length 15 with sum zero and sum of absolute values 2n.at n=15A158149
- T(n,k)=Number of idempotent n X n 0..k matrices.at n=39A222821
- Number of idempotent 4X4 0..n matrices.at n=5A222823