# A069778 (b-file synthesized from sequence entry) 0 1 1 6 2 21 3 52 4 105 5 186 6 301 7 456 8 657 9 910 10 1221 11 1596 12 2041 13 2562 14 3165 15 3856 16 4641 17 5526 18 6517 19 7620 20 8841 21 10186 22 11661 23 13272 24 15025 25 16926 26 18981 27 21196 28 23577 29 26130 30 28861 31 31776 32 34881 33 38182 34 41685 35 45396 36 49321 37 53466 38 57837 39 62440 40 67281 41 72366