# A134092 (b-file synthesized from sequence entry) 0 1 1 3 2 18 3 110 4 780 5 6167 6 53494 7 504030 8 5112090 9 55411697 10 638154165 11 7770348170 12 99618149267 13 1339889000543 14 18848892749144 15 276573551651632 16 4222814264496510 17 66947348027905977 18 1099955438013660173