124031domain: NAppears in sequencesBase-5 Armstrong or narcissistic numbers, written in base 5.at n=12A010345a(n) = 5*n^4 - 10*n^3 + 20*n^2 - 15*n + 11.at n=12A115565Number of sets of exactly n positive integers <= n+7 having a square element sum.at n=27A281970