# A359094 (b-file synthesized from sequence entry) 1 1 2 5 3 30 4 140 5 4900 6 155155 7 6930 8 223300 9 3573570 10 380380 11 340889640 12 1801800 13 333833500 14 711410700 15 78963134250 16 427826509110 17 70836325560 18 862289508080 19 62366724420 20 3975527876320 21 2279301054030 22 3422848288860 23 58264695188700 24 4903512426212400