116321domain: NAppears in sequencesa(n) = n^4 - 10n^3 + 35n^2 - 48n + 23.at n=20A137864Partial sums of the Fermat pseudoprimes to base 2, A001567.at n=24A172255Numbers k that divide the sum of digits of 13^k.at n=76A175525Number of distinct solutions of sum{i=1..3}(x(2i-1)*x(2i)) = 1 (mod n), with x() only in 2..n-2.at n=25A180826