# A016161 (b-file synthesized from sequence entry) 0 1 1 12 2 109 3 888 4 6841 5 51012 6 372709 7 2687088 8 19200241 9 136354812 10 964249309 11 6798573288 12 47834153641 13 336059778612 14 2358521965909 15 16540171339488 16 115933787267041 17 812299450322412 18 5689910849522509