# A049055 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 1 5 12 6 6 7 1 8 50 9 132 10 24 11 1 12 180 13 1830 14 1560 15 120 16 1 17 602 18 20460 19 60960 20 20520 21 720 22 1 23 1932 24 201726 25 1856400 26 2047920 27 302400 28 5040 29 1 30 6050 31 1832292 32 48550824 33 155801520 34 72586080 35 4979520 36 40320 37 1 38 18660 39 15717750 40 1144994760 41 10006131240 42 13069123200 43 2767474080 44 91082880 45 362880