# A150111 (b-file synthesized from sequence entry) 0 1 1 2 2 6 3 19 4 70 5 262 6 1023 7 4094 8 16818 9 69945 10 294922 11 1259081 12 5426730 13 23561608 14 103046709 15 453659247 16 2007599774 17 8925829461 18 39864238925 19 178747571197 20 804199297973 21 3629751750042 22 16432391497625 23 74589692974370 24 339393460911899 25 1547853224158976 26 7074306420083226 27 32394805350463378