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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 6 |
| 4 | 12 |
| 5 | 21 |
| 6 | 38 |
| 7 | 63 |
| 8 | 106 |
| 9 | 170 |
| 10 | 272 |
| 11 | 422 |
| 12 | 653 |
| 13 | 986 |
| 14 | 1482 |
| 15 | 2191 |
| 16 | 3218 |
| 17 | 4666 |
| 18 | 6726 |
| 19 | 9592 |
| 20 | 13602 |
| 21 | 19122 |
| 22 | 26733 |
| 23 | 37102 |
| 24 | 51232 |
| 25 | 70292 |
| 26 | 95989 |
| 27 | 130356 |
| 28 | 176246 |
| 29 | 237120 |
| 30 | 317724 |
| 31 | 423840 |
| 32 | 563266 |
| 33 | 745562 |
| 34 | 983384 |
| 35 | 1292333 |
| 36 | 1692790 |
| 37 | 2209886 |
| 38 | 2876132 |
[1,1,3,6,12,21,38,63,106,170,272,422,653,986,1482, 2191,3218,4666,6726,9592,13602,19122,26733,37102, 51232,70292,95989,130356,176246,237120,317724, 423840,563266,745562,983384,1292333,1692790, 2209886,2876132] |