264180
domain: N
Appears in sequences
- a(n) = n*(n+1)*(n+2)*(n+3)/6.at n=34A033488
- 1 / min{1/n - 1/a - 1/b > 0}, where a and b are integers.at n=33A045470
- a(n) = binomial(2*n, n) mod ((n+1)*(n+2)*(n+3)*(n+4)).at n=32A065346
- Numbers taking exactly 21 steps to reach 15 in A086793.at n=24A119397
- Number of different fixed (possibly) disconnected trominoes bounded (not necessarily tightly) by an n*n square.at n=20A162673