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| n | a(n) |
|---|---|
| 1 | 153 |
| 2 | 393 |
| 3 | 857 |
| 4 | 2065 |
| 5 | 5255 |
| 6 | 12914 |
| 7 | 31032 |
| 8 | 75634 |
| 9 | 185630 |
| 10 | 453792 |
| 11 | 1107035 |
| 12 | 2701934 |
| 13 | 6602744 |
| 14 | 16133440 |
| 15 | 39398362 |
| 16 | 96225937 |
| 17 | 235055049 |
| 18 | 574159002 |
| 19 | 1402439544 |
| 20 | 3425537766 |
| 21 | 8367239407 |
| 22 | 20438044264 |
| 23 | 49921902827 |
| 24 | 121939228872 |
| 25 | 297849461916 |
[153,393,857,2065,5255,12914,31032,75634,185630, 453792,1107035,2701934,6602744,16133440,39398362, 96225937,235055049,574159002,1402439544, 3425537766,8367239407,20438044264,49921902827, 121939228872,297849461916] |