45066
domain: N
Appears in sequences
- a(n) = A026626(2*n, n-2).at n=7A026629
- Number of optimal binary prefix-free codes with n words all ending in 1.at n=48A055167
- Numbers k such that k^6 + 1091 is prime.at n=26A066386
- Primitive (squarefree) elements of A199745.at n=34A200145
- Number of partitions p of n such that (number of numbers of the form 5k + 3 in p) is a part of p.at n=44A241552
- Let p = n-th prime == 3 mod 8; a(n) = sum of quadratic residues mod p that are > p/2.at n=24A282722
- Number of permutations of [n] avoiding {1324, 2431, 3142}.at n=10A294819
- a(n) = n*(2*n - 3 - (-1)^n)*(11*n + (-1)^n)/24.at n=36A308026
- Number of regions in an equilateral triangle "frame" of size n.at n=16A328526