32160
domain: N
Appears in sequences
- a(n) is the concatenation of n and 5n.at n=31A019553
- Number of permutations where every element in binary notation has ones at the same or adjacent positions of previous element's binary ones.at n=9A115506
- Numbers such that the sum of the factorials of the digits of the fifth power is a square.at n=34A126078
- Strongly refactorable numbers: numbers n such that if n is divisible by d, it is divisible by the number of divisors of d.at n=35A141586
- Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, 1), (0, 0, -1), (0, 1, 1), (1, 0, 1)}.at n=8A150505
- Triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having exactly k odd fixed points (0 <= k <= ceiling(n/2)).at n=31A161133
- a(n) is the number of positive integers k such that k is equal to the number of 1's in the digits of the base-n expansion of all positive integers <= k.at n=30A165617
- Number of ways to place 2 nonattacking wazirs on an n X n board.at n=15A172225
- Molecular topological indices of the cycle graphs.at n=39A192797
- a(n) = 4*n*(n^2 + 2).at n=19A292022
- a(n) = A293857(n)/A010551(n).at n=21A293984
- Number of 4 element sets of distinct integer sided rectangles that fill an n X n square.at n=39A387171