105450domain: NAppears in sequencesPositive numbers k such that k and 5*k are anagrams in base 6 (written in base 6).at n=21A023067a(n) = n*(n+1)*(2*n+1).at n=37A055112a(n) = p*(p + 1)*(2*p + 1) where p is the n-th prime.at n=11A098996