# A369073 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 6 5 16 6 46 7 145 8 480 9 1820 10 6809 11 29214 12 133441 13 626090 14 3053048 15 16339753 16 89188931 17 509642042 18 3017799873 19 18798910220 20 120223747234 21 802412450368 22 5475810949896 23 39019578827168 24 285084247621276 25 2151914766238809 26 16598498118133839 27 132851511943710915