44731051
domain: N
Appears in sequences
- Gaussian binomial coefficient [n, 2] for q = 2.at n=14A006095
- Gaussian binomial coefficients [n, 12] for q = 2.at n=2A022195
- A Jacobsthal variant.at n=26A097038
- a(n) = 6*a(n-1) - 8*a(n-2) + 1 for n > 1; a(0) = 1, a(1) = 7.at n=12A171477
- Number of set partitions of [n] into exactly four blocks such that all odd elements are in blocks with an odd index and all even elements are in blocks with an even index.at n=24A274868
- Fermat pseudoprimes to base 2 that are pentagonal.at n=22A293623
- a(n) = 6 * GaussBinomial(2*n, 2, 2) / denominator(Bernoulli(2*n, 1)).at n=7A346463