# A143703 (b-file synthesized from sequence entry) 1 1 2 3 3 7 4 15 5 15 6 21 7 15 8 39 9 91 10 555 11 285 12 915 13 3333 14 1155 15 1267 16 2769 17 4935 18 10005 19 70635 20 7035 21 240045 22 77745 23 167055 24 897429 25 1231635 26 1066065 27 1174695