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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 12 |
| 4 | 22 |
| 5 | 38 |
| 6 | 64 |
| 7 | 105 |
| 8 | 166 |
| 9 | 258 |
| 10 | 395 |
| 11 | 592 |
| 12 | 876 |
| 13 | 1280 |
| 14 | 1846 |
| 15 | 2636 |
| 16 | 3728 |
| 17 | 5222 |
| 18 | 7256 |
| 19 | 10006 |
| 20 | 13696 |
| 21 | 18624 |
| 22 | 25169 |
| 23 | 33808 |
| 24 | 45164 |
| 25 | 60022 |
| 26 | 79366 |
| 27 | 104457 |
| 28 | 136870 |
| 29 | 178572 |
| 30 | 232044 |
| 31 | 300368 |
| 32 | 387366 |
| 33 | 497804 |
| 34 | 637568 |
| 35 | 813910 |
| 36 | 1035792 |
| 37 | 1314214 |
[1,3,6,12,22,38,64,105,166,258,395,592,876,1280, 1846,2636,3728,5222,7256,10006,13696,18624,25169, 33808,45164,60022,79366,104457,136870,178572, 232044,300368,387366,497804,637568,813910,1035792, 1314214] |