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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 14 |
| 4 | 38 |
| 5 | 76 |
| 6 | 136 |
| 7 | 218 |
| 8 | 330 |
| 9 | 472 |
| 10 | 652 |
| 11 | 870 |
| 12 | 1134 |
| 13 | 1444 |
| 14 | 1808 |
| 15 | 2226 |
| 16 | 2706 |
| 17 | 3248 |
| 18 | 3860 |
| 19 | 4542 |
| 20 | 5302 |
| 21 | 6140 |
| 22 | 7064 |
| 23 | 8074 |
| 24 | 9178 |
| 25 | 10376 |
| 26 | 11676 |
| 27 | 13078 |
| 28 | 14590 |
| 29 | 16212 |
| 30 | 17952 |
| 31 | 19810 |
| 32 | 21794 |
| 33 | 23904 |
| 34 | 26148 |
| 35 | 28526 |
| 36 | 31046 |
| 37 | 33708 |
| 38 | 36520 |
| 39 | 39482 |
| 40 | 42602 |
[1,4,14,38,76,136,218,330,472,652,870,1134,1444, 1808,2226,2706,3248,3860,4542,5302,6140,7064,8074, 9178,10376,11676,13078,14590,16212,17952,19810, 21794,23904,26148,28526,31046,33708,36520,39482, 42602] |