# A149455 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 13 4 50 5 182 6 712 7 2711 8 10672 9 41470 10 164102 11 644580 12 2557808 13 10108272 14 40194806 15 159440027 16 634857536 17 2524253822 18 10061284624 19 40067909864 20 159820748482 21 637157976526 22 2542888042852 23 10145529835268 24 40507851460434 25 161706752889040 26 645859214596938 27 2579323889200758