# A148212 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 12 5 37 6 129 7 463 8 1739 9 6714 10 26604 11 107525 12 442184 13 1844112 14 7785086 15 33204662 16 142898151 17 619768375 18 2706503596 19 11890979967 20 52525690191 21 233144640014 22 1039370171657 23 4651849092472 24 20894660613343 25 94159212583127 26 425587094508458 27 1928886535320443 28 8764438279695072