# A150431 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 24 4 98 5 381 6 1626 7 6793 8 29484 9 128021 10 564403 11 2500084 12 11170691 13 50116462 14 226143658 15 1024155781 16 4656130957 17 21235409051 18 97128731541 19 445394455074 20 2047219553857 21 9429370132204 22 43515500709007 23 201169480526362 24 931494523678825 25 4319608455445313 26 20058776859173756 27 93264842819390272