# A158952 (b-file synthesized from sequence entry) 1 1 2 2 3 9 4 67 5 625 6 7903 7 117649 8 2105342 9 43048905 10 1000976352 11 25937424601 12 743191207969 13 23298085122481 14 793763217701693 15 29192928060852217 16 1152939097060278256 17 48661191875666868481 18 2185919903971766191000