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| n | a(n) |
|---|---|
| 1 | 46 |
| 2 | 90 |
| 3 | 172 |
| 4 | 316 |
| 5 | 588 |
| 6 | 1070 |
| 7 | 1974 |
| 8 | 3608 |
| 9 | 6670 |
| 10 | 12310 |
| 11 | 22930 |
| 12 | 42818 |
| 13 | 80560 |
| 14 | 152240 |
| 15 | 289462 |
| 16 | 553112 |
| 17 | 1062084 |
| 18 | 2049116 |
| 19 | 3968676 |
| 20 | 7718410 |
| 21 | 15055782 |
| 22 | 29469492 |
| 23 | 57813502 |
| 24 | 113731682 |
| 25 | 224119946 |
| 26 | 442604110 |
| 27 | 875210760 |
| 28 | 1733534748 |
| 29 | 3436966638 |
[46,90,172,316,588,1070,1974,3608,6670,12310, 22930,42818,80560,152240,289462,553112,1062084, 2049116,3968676,7718410,15055782,29469492, 57813502,113731682,224119946,442604110,875210760, 1733534748,3436966638] |