254800
domain: N
Appears in sequences
- Numbers k not divisible by 6 such that sigma(k) > 3*k.at n=20A126104
- Number of n-cell fixed polycubes that are proper in n-2 dimensions.at n=5A171860
- Triangle read by rows: DX(n,d) = number of properly d-dimensional polyominoes with n cells, modulo translations (n>=1, 0 <= d <= n-1).at n=26A195739
- Number of ways of writing n as the sum of 10 triangular numbers from A000217.at n=27A226254
- Number of 2 X 2 matrices with entries in {0,1,...,n} and odd trace with no elements repeated.at n=27A279905
- a(n) is the number of subsets of {1..n} that contain 3 even and 3 odd numbers.at n=31A331574
- a(n) is the number of 2 X 2 matrices with elements 1..n where at least one row and at least one column is strictly increasing.at n=26A390922