# A088114 (b-file synthesized from sequence entry) 1 2 2 4 3 8 4 88 5 252 6 2112 7 2112 8 2112 9 4224 10 8448 11 48384 12 48384 13 405504 14 405504 15 405504 16 40955904 17 677707776 18 677707776 19 677707776 20 677707776 21 677574475776 22 677574475776 23 42833977933824 24 6929958668599296