# A237765 (b-file synthesized from sequence entry) 0 0 1 0 2 0 3 1 4 2 5 1 6 3 7 9 8 9 9 3 10 6 11 24 12 36 13 24 14 6 15 10 16 50 17 100 18 100 19 50 20 10 21 15 22 90 23 225 24 300 25 225 26 90 27 15 28 21 29 147 30 441 31 735 32 735 33 441 34 147 35 21 36 28 37 224 38 784 39 1568 40 1960 41 1568 42 784 43 224 44 28 45 36 46 324 47 1296 48 3024 49 4536 50 4536 51 3024 52 1296 53 324 54 36