# A048012 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 0 5 0 6 0 7 0 8 0 9 0 10 21 11 28 12 36 13 144 14 180 15 220 16 550 17 660 18 780 19 2275 20 2821 21 3465 22 13230 23 16940 24 21420 25 74256 26 94248 27 118104 28 367080 29 461700 30 574644 31 1824690 32 2310000 33 2899380 34 9684840 35 12357532 36 15634300 37 51798175 38 66098175