# A258793 (b-file synthesized from sequence entry) 0 1 1 4 2 55 3 896 4 16494 5 326422 6 6812064 7 147937628 8 3315019979 9 76184664934 10 1787702723767 11 42688437971038 12 1034621287862521 13 25398832816003228 14 630502487733706193 15 15805630063826901440 16 399669931534045129915 17 10184690536676439639278 18 261340023300544414822171