# A144254 (b-file synthesized from sequence entry) 1 1 2 2 3 1 4 3 5 4 6 3 7 4 8 10 9 18 10 10 11 5 12 20 13 63 14 80 15 42 16 6 17 35 18 168 19 360 20 420 21 210 22 7 23 56 24 378 25 1200 26 2310 27 2520 28 1199 29 8 30 84 31 756 32 3300 33 9240 34 16380 35 16786 36 7670 37 9 38 120 39 1386 40 7920 41 30030 42 76440 43 125895 44 122720 45 54224 46 10 47 165 48 2376 49 17160 50 84084 51 286650