# A241683 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 2 4 12 5 50 6 220 7 882 8 3612 9 14450 10 58140 11 232562 12 931612 13 3726450 14 14911260 15 59645042 16 238602012 17 954408050 18 3817719580 19 15270878322 20 61083862812 21 244335451250 22 977343203100 23 3909372812402