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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 94 |
| 4 | 293 |
| 5 | 742 |
| 6 | 1642 |
| 7 | 3458 |
| 8 | 7087 |
| 9 | 14506 |
| 10 | 29804 |
| 11 | 61750 |
| 12 | 128761 |
| 13 | 269822 |
| 14 | 566830 |
| 15 | 1191898 |
| 16 | 2505443 |
| 17 | 5261218 |
| 18 | 11032048 |
| 19 | 23094830 |
| 20 | 48265261 |
| 21 | 100699222 |
| 22 | 209756786 |
| 23 | 436255474 |
| 24 | 906024343 |
| 25 | 1879110362 |
| 26 | 3892384372 |
| 27 | 8053142758 |
| 28 | 16643086817 |
| 29 | 34359837166 |
| 30 | 70867070134 |
[2,16,94,293,742,1642,3458,7087,14506,29804,61750, 128761,269822,566830,1191898,2505443,5261218, 11032048,23094830,48265261,100699222,209756786, 436255474,906024343,1879110362,3892384372, 8053142758,16643086817,34359837166,70867070134] |