# A139577 (b-file synthesized from sequence entry) 0 0 1 13 2 30 3 51 4 76 5 105 6 138 7 175 8 216 9 261 10 310 11 363 12 420 13 481 14 546 15 615 16 688 17 765 18 846 19 931 20 1020 21 1113 22 1210 23 1311 24 1416 25 1525 26 1638 27 1755 28 1876 29 2001 30 2130 31 2263 32 2400 33 2541 34 2686 35 2835 36 2988 37 3145 38 3306 39 3471 40 3640 41 3813 42 3990