56689
domain: N
Appears in sequences
- Composite and every divisor (except 1) contains the digit 8.at n=9A062678
- Expansion of 1/(1 + 3*x - 4*x^2 + x^3).at n=8A122600
- Number of compositions of n with exactly one descent.at n=20A241626
- Number of 3Xn 0..1 arrays with every element equal to 0, 1 or 4 horizontally or antidiagonally adjacent elements, with upper left element zero.at n=16A301965