| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 16 |
| 4 | 33 |
| 5 | 60 |
| 6 | 118 |
| 7 | 210 |
| 8 | 354 |
| 9 | 612 |
| 10 | 1008 |
| 11 | 1608 |
| 12 | 2583 |
| 13 | 4035 |
| 14 | 6174 |
| 15 | 9448 |
| 16 | 14196 |
| 17 | 21024 |
| 18 | 31054 |
| 19 | 45282 |
| 20 | 65322 |
| 21 | 93884 |
| 22 | 133638 |
| 23 | 188640 |
| 24 | 265225 |
| 25 | 370086 |
| 26 | 512934 |
| 27 | 708136 |
| 28 | 971628 |
| 29 | 1325724 |
| 30 | 1802134 |
| 31 | 2437200 |
| 32 | 3280452 |
| 33 | 4400132 |
| 34 | 5876184 |
| 35 | 7815288 |
| 36 | 10360890 |
| 37 | 13683525 |
[1,3,6,16,33,60,118,210,354,612,1008,1608,2583, 4035,6174,9448,14196,21024,31054,45282,65322, 93884,133638,188640,265225,370086,512934,708136, 971628,1325724,1802134,2437200,3280452,4400132, 5876184,7815288,10360890,13683525] |