# A081951 (b-file synthesized from sequence entry) 1 3 2 15 3 55 4 253 5 1081 6 13861 7 115921 8 665281 9 18280081 10 75479041 11 2080995841 12 68302634401 13 924972048001 14 48318396825601 15 495843855091201 16 31747936252032001 17 791764338474869761