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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 18 |
| 5 | 29 |
| 6 | 54 |
| 7 | 82 |
| 8 | 136 |
| 9 | 202 |
| 10 | 309 |
| 11 | 441 |
| 12 | 658 |
| 13 | 915 |
| 14 | 1303 |
| 15 | 1790 |
| 16 | 2479 |
| 17 | 3337 |
| 18 | 4541 |
| 19 | 6022 |
| 20 | 8045 |
| 21 | 10554 |
| 22 | 13876 |
| 23 | 17996 |
| 24 | 23409 |
| 25 | 30055 |
| 26 | 38634 |
| 27 | 49208 |
| 28 | 62650 |
| 29 | 79116 |
| 30 | 99898 |
| 31 | 125213 |
| 32 | 156848 |
| 33 | 195339 |
| 34 | 242964 |
| 35 | 300707 |
| 36 | 371770 |
| 37 | 457493 |
| 38 | 562292 |
| 39 | 688451 |
| 40 | 841707 |
| 41 | 1025484 |
[0,1,4,8,18,29,54,82,136,202,309,441,658,915,1303, 1790,2479,3337,4541,6022,8045,10554,13876,17996, 23409,30055,38634,49208,62650,79116,99898,125213, 156848,195339,242964,300707,371770,457493,562292, 688451,841707,1025484] |