# A372137 (b-file synthesized from sequence entry) 0 1 1 1 2 6 3 21 4 181 5 771 6 7728 7 34689 8 385632 9 1732971 10 21041598 11 92147697 12 1217109951 13 5099210686 14 73380609681 15 289623783084 16 4564472639880 17 16722146775195 18 290985244619874 19 974044248064611 20 18925364858562927 21 56848541164586820 22 1251693011560795635