134217736domain: NAppears in sequencesa(n) = n*(n^6 + 1)/2.at n=16A168029a(n) = 8*(2^n + 1).at n=24A175161Number of binary necklaces of 2n beads for which a cut exists producing a palindrome.at n=27A185376a(n) = n^9 + n.at n=8A196290a(n) = 2^n + 8.at n=27A242475a(n) = n + n*n^n.at n=7A322406