437164
domain: N
Appears in sequences
- Sum of the 4th powers of the divisors of n is divisible by n.at n=20A046764
- Number of values of k for which phi(k) is a permutation of decimal digits of k, for k < 10^n.at n=9A216385
- Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.at n=9A264417