501969domain: NAppears in sequencesa(n) = n^5 - n^4 + n^3 - n^2 + n - 1.at n=14A062159Numbers whose set of base 14 digits is {0,D}, where D base 14 = 13 base 10.at n=21A097260a(n) is the least number k such that k*n+1 is a prime dividing n^n-1.at n=12A187025