# A057833 (b-file synthesized from sequence entry) 1 1 2 7 3 49 4 343 5 539 6 2401 7 2429 8 4169 9 16807 10 36197 11 81977 12 117649 13 160867 14 314531 15 823543 16 1226911 17 1294139 18 4751579 19 5764801