# A112846 (b-file synthesized from sequence entry) 0 1 1 2 2 4 3 10 4 30 5 103 6 384 7 1508 8 6126 9 25513 10 108278 11 466523 12 2034981 13 8968746 14 39875940 15 138760603 16 178636543 17 3026583484 18 16028356176 19 75647274620 20 350111055991 21 1618175863400 22 7495933933620 23 34821723061950