# A077207 (b-file synthesized from sequence entry) 1 1 2 5 3 32 4 126 5 141 6 447 7 4001 8 4472 9 40001 10 44721 11 141421 12 447214 13 3162278 14 4472136 15 34641016 16 109544512 17 400000001 18 447213596 19 3464101616 20 10954451150 21 31622776602 22 77459666925 23 316227766017 24 774596669241 25 1414213562373