279942domain: NAppears in sequencesSums of 2 distinct powers of 6.at n=22A038478Sums of two powers of 6.at n=29A055257a(n) = 6^n + 6.at n=7A178681a(n) = n^7 + n.at n=6A190578a(n) = n + n*n^n.at n=5A322406a(n) = Sum_{k=1..n} phi(gcd(k, n))^n.at n=6A342539a(n) = Sum_{k=1..n} phi(gcd(k, n))^gcd(k, n).at n=6A342543