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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 9 |
| 2 | 44 |
| 3 | 157 |
| 4 | 458 |
| 5 | 1158 |
| 6 | 2629 |
| 7 | 5486 |
| 8 | 10695 |
| 9 | 19711 |
| 10 | 34651 |
| 11 | 58507 |
| 12 | 95404 |
| 13 | 150908 |
| 14 | 232389 |
| 15 | 349445 |
| 16 | 514393 |
| 17 | 742832 |
| 18 | 1054283 |
| 19 | 1472911 |
| 20 | 2028333 |
| 21 | 2756518 |
| 22 | 3700784 |
| 23 | 4912897 |
| 24 | 6454277 |
| 25 | 8397316 |
| 26 | 10826813 |
| 27 | 13841530 |
| 28 | 17555875 |
| 29 | 22101717 |
| 30 | 27630339 |
| 31 | 34314534 |
| 32 | 42350849 |
| 33 | 51961982 |
| 34 | 63399337 |
| 35 | 76945741 |
| 36 | 92918329 |
| 37 | 111671603 |
| 38 | 133600669 |
| 39 | 159144658 |
| 40 | 188790335 |
[1,9,44,157,458,1158,2629,5486,10695,19711,34651, 58507,95404,150908,232389,349445,514393,742832, 1054283,1472911,2028333,2756518,3700784,4912897, 6454277,8397316,10826813,13841530,17555875, 22101717,27630339,34314534,42350849,51961982, 63399337,76945741,92918329,111671603,133600669, 159144658,188790335] |