214358880domain: NAppears in sequencesa(n) = 11^n-1.at n=8A024127Jordan function J_8(n).at n=10A069093a(n) = n^8 - 1.at n=10A258809a(n) = Sum_{d|n, n/d==1 (mod 4)} d^8 - Sum_{d|n, n/d==3 (mod 4)} d^8.at n=10A321832Values of records in A368698.at n=27A368989