# A064060 (b-file synthesized from sequence entry) 2 1 3 1 4 1 5 3 6 1 7 10 8 15 9 1 10 10 11 15 12 15 13 45 14 60 15 90 16 1 17 21 18 35 19 70 20 105 21 105 22 105 23 105 24 210 25 315 26 420 27 630 28 630 29 1 30 28 31 35 32 56 33 105 34 168 35 210 36 210 37 280 38 280 39 280 40 315 41 420 42 420 43 560 44 560 45 840 46 840 47 840 48 1260 49 1260