# A342807 (b-file synthesized from sequence entry) 0 1 1 6 2 30 3 150 4 750 5 3750 6 18630 7 92406 8 458262 9 2270478 10 11245590 11 55697766 12 275769654 13 1365260862 14 6758345838 15 33450929886 16 165549052326 17 819248589606 18 4054005363918