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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 15 |
| 2 | 100 |
| 3 | 436 |
| 4 | 1459 |
| 5 | 4069 |
| 6 | 9929 |
| 7 | 21871 |
| 8 | 44426 |
| 9 | 84494 |
| 10 | 152171 |
| 11 | 261749 |
| 12 | 432906 |
| 13 | 692102 |
| 14 | 1074198 |
| 15 | 1624314 |
| 16 | 2399943 |
| 17 | 3473337 |
| 18 | 4934182 |
| 19 | 6892578 |
| 20 | 9482341 |
| 21 | 12864643 |
| 22 | 17232007 |
| 23 | 22812673 |
| 24 | 29875352 |
| 25 | 38734384 |
| 26 | 49755317 |
| 27 | 63360923 |
| 28 | 80037668 |
| 29 | 100342652 |
| 30 | 124911036 |
[1,15,100,436,1459,4069,9929,21871,44426,84494, 152171,261749,432906,692102,1074198,1624314, 2399943,3473337,4934182,6892578,9482341,12864643, 17232007,22812673,29875352,38734384,49755317, 63360923,80037668,100342652,124911036] |