# A162321 (b-file synthesized from sequence entry) 0 1 1 15 2 119 3 665 4 2939 5 10933 6 35580 7 103972 8 277950 9 689282 10 1602727 11 3523945 12 7376794 13 14784390 14 28500705 15 53054702 16 95687240 17 167682306 18 286218490 19 476893794 20 777106448 21 1240505775 22 1942759458 23 2988915740 24 4522669833