# A069622 (b-file synthesized from sequence entry) 1 1 2 2 3 9 4 16 5 625 6 7776 7 117649 8 262144 9 4782969 10 1000000000 11 25937424601 12 743008370688 13 23298085122481 14 793714773254144 15 29192926025390625 16 4503599627370496 17 48661191875666868481 18 2185911559738696531968