# A143806 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 2 4 3 5 2 6 6 7 11 8 12 9 7 10 24 11 50 12 70 13 70 14 36 15 120 16 274 17 450 18 595 19 540 20 250 21 720 22 1764 23 3248 24 5145 25 6300 26 5250 27 2229