# A093121 (b-file synthesized from sequence entry) 0 1 1 0 2 4 3 6 4 30 5 80 6 286 7 882 8 2924 9 9350 10 30438 11 98208 12 318278 13 1029210 14 3331820 15 10780014 16 34888062 17 112894960 18 365344142 19 1182264930 20 3825911596 21 12380874550 22 40065409014 23 129654294336 24 419570260150 25 1357757640330