# A126397 (b-file synthesized from sequence entry) 0 1 1 10 2 44 3 200 4 918 5 4236 6 19598 7 90790 8 420870 9 1951636 10 9051480 11 41983154 12 194736668 13 903293618 14 4190003458 15 19435777562 16 90155141564 17 418195731384 18 1939853565942 19 8998257693932 20 41739569773726 21 193614349514214