94371840
domain: N
Appears in sequences
- Number of subsets of {1,.., n} containing no twin prime pairs.at n=27A089827
- Row sums of triangle A094280.at n=24A094283
- Row sums of A128134.at n=22A128135
- n*(n-1)*4^n.at n=10A128798
- Numbers k such that k is a member of A002183 but 2*k is not.at n=10A160233
- Number of n X n 0..3 arrays with no element equal to another at a city block distance of exactly two, and new values 0..3 introduced in row major order.at n=10A222833
- Denominator of b_{2n}(1/4), where b_{n}(x) are Nörlund's generalized Bernoulli polynomials.at n=7A239793
- a(n) = phi(n^n - n) where phi is the Euler totient function.at n=7A377678