# A148682 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 7 4 22 5 66 6 227 7 758 8 2723 9 9807 10 36535 11 136783 12 525245 13 2031029 14 7958899 15 31458447 16 125716531 17 505462106 18 2048274371 19 8355777974 20 34294187162 21 141446086258 22 586560299481 23 2443831656620 24 10223955384759 25 42941361160034 26 181064797061248 27 766076071152554 28 3251480803772371