898128000
domain: N
Appears in sequences
- Orders of sporadic simple groups.at n=9A001228
- Number of simplices in barycentric subdivision of n-simplex.at n=8A005461
- Number of labeled rooted trees with n nodes and 2 leaves.at n=8A055303
- Generalized Stirling2 array (4,2).at n=27A090438
- Third column (k=4) of array A090438 ((4,2)-Stirling2).at n=4A091033
- Orders of non-Abelian simple groups of rank at least four.at n=23A119631
- a(n) = 9^n - 8*8^n + 28*7^n - 56*6^n + 70*5^n - 56*4^n + 28*3^n - 8*2^n + 1.at n=11A228911
- Triangle read by rows: the positive terms of A163626.at n=40A249163
- a(n) is the least k such that A188999(A188999(k)) = n*k, where A188999 is the bi-unitary sigma function, or 0 if no such k exists.at n=16A318242