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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 13 |
| 11 | 26 |
| 12 | 39 |
| 13 | 169 |
| 14 | 221 |
| 15 | 442 |
| 16 | 663 |
| 17 | 884 |
| 18 | 2405 |
| 19 | 2873 |
| 20 | 2912 |
| 21 | 5980 |
| 22 | 26455 |
| 23 | 28730 |
| 24 | 29120 |
| 25 | 31667 |
| 26 | 42441 |
| 27 | 48841 |
| 28 | 52900 |
| 29 | 74435 |
| 30 | 84882 |
| 31 | 104650 |
| 32 | 132808 |
| 33 | 139380 |
| 34 | 413738 |
| 35 | 20392554 |
| 36 | 23490402 |
| 37 | 25209381 |
| 38 | 32287569 |
| 39 | 234904020 |
| 40 | 239235484 |
[1,2,3,4,5,6,7,8,9,13,26,39,169,221,442,663,884, 2405,2873,2912,5980,26455,28730,29120,31667,42441, 48841,52900,74435,84882,104650,132808,139380, 413738,20392554,23490402,25209381,32287569, 234904020,239235484] |