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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 7 |
| 3 | 17 |
| 4 | 35 |
| 5 | 64 |
| 6 | 111 |
| 7 | 182 |
| 8 | 286 |
| 9 | 436 |
| 10 | 647 |
| 11 | 938 |
| 12 | 1336 |
| 13 | 1871 |
| 14 | 2583 |
| 15 | 3520 |
| 16 | 4741 |
| 17 | 6320 |
| 18 | 8347 |
| 19 | 10930 |
| 20 | 14199 |
| 21 | 18312 |
| 22 | 23460 |
| 23 | 29869 |
| 24 | 37808 |
| 25 | 47600 |
| 26 | 59624 |
| 27 | 74331 |
| 28 | 92250 |
| 29 | 114006 |
| 30 | 140329 |
| 31 | 172077 |
| 32 | 210249 |
| 33 | 256010 |
| 34 | 310717 |
| 35 | 375943 |
| 36 | 453513 |
| 37 | 545538 |
| 38 | 654453 |
[0,2,7,17,35,64,111,182,286,436,647,938,1336,1871, 2583,3520,4741,6320,8347,10930,14199,18312,23460, 29869,37808,47600,59624,74331,92250,114006,140329, 172077,210249,256010,310717,375943,453513,545538, 654453] |