2640264
domain: N
Appears in sequences
- Divide n-th row of A084024 by n.at n=30A084025
- Triangle read by rows: T(n,k) is the number of permutations of [n] having k cycles with at least 3 alternating runs (it is assumed that the smallest element of a cycle is in the first position), 0<=k<=floor(n/4).at n=23A187250
- Numbers k such that k*sod(k) and k/sod(k) are both palindromes, where sod(k) denotes the sum of digits of k (A007953).at n=5A334533