# A013637 (b-file synthesized from sequence entry) 3 6 4 12 5 15 6 30 7 35 8 56 9 63 10 70 11 77 12 132 13 143 14 182 15 195 16 208 17 221 18 306 19 323 20 380 21 399 22 418 23 437 24 552 25 575 26 598 27 621 28 644 29 667 30 870 31 899 32 992 33 1023 34 1054 35 1085 36 1116 37 1147 38 1406 39 1443 40 1480 41 1517 42 1722 43 1763