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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 14 |
| 4 | 26 |
| 5 | 45 |
| 6 | 75 |
| 7 | 120 |
| 8 | 187 |
| 9 | 284 |
| 10 | 423 |
| 11 | 618 |
| 12 | 890 |
| 13 | 1263 |
| 14 | 1771 |
| 15 | 2455 |
| 16 | 3370 |
| 17 | 4582 |
| 18 | 6179 |
| 19 | 8266 |
| 20 | 10980 |
| 21 | 14486 |
| 22 | 18994 |
| 23 | 24757 |
| 24 | 32095 |
| 25 | 41391 |
| 26 | 53123 |
| 27 | 67865 |
| 28 | 86325 |
| 29 | 109350 |
| 30 | 137979 |
| 31 | 173450 |
| 32 | 217270 |
| 33 | 271233 |
| 34 | 337506 |
| 35 | 418662 |
| 36 | 517795 |
| 37 | 638565 |
| 38 | 785350 |
| 39 | 963320 |
| 40 | 1178628 |
[1,3,7,14,26,45,75,120,187,284,423,618,890,1263, 1771,2455,3370,4582,6179,8266,10980,14486,18994, 24757,32095,41391,53123,67865,86325,109350,137979, 173450,217270,271233,337506,418662,517795,638565, 785350,963320,1178628] |