# A003866 (b-file synthesized from sequence entry) 1 1 2 10 3 44 4 45 5 110 6 120 7 126 8 126 9 132 10 165 11 210 12 231 13 330 14 385 15 462 16 550 17 594 18 594 19 594 20 660 21 693 22 825 23 924 24 990 25 990 26 1100 27 1155 28 1232 29 1320 30 1540 31 2310