# A018130 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 4 5 6 6 9 7 12 8 18 9 25 10 36 11 52 12 74 13 105 14 151 15 216 16 309 17 442 18 633 19 906 20 1296 21 1855 22 2654 23 3797 24 5434 25 7776 26 11127 27 15923 28 22785 29 32604 30 46656 31 66763 32 95536 33 136709 34 195627 35 279936 36 400580 37 573217 38 820256