# A027232 (b-file synthesized from sequence entry) 1 1 2 4 3 19 4 72 5 355 6 1347 7 6843 8 26077 9 135752 10 519336 11 2760110 12 10591394 13 57299551 14 220393887 15 1210772453 16 4665698732 17 25974365600 18 100243916036 19 564517479641 20 2181476412875 21 12407767954139 22 48002072364351 23 275392803316254 24 1066512702720864 25 6164746100658825 26 23896975393255717