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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 13 |
| 4 | 25 |
| 5 | 61 |
| 6 | 121 |
| 7 | 221 |
| 8 | 409 |
| 9 | 1021 |
| 10 | 1913 |
| 11 | 4061 |
| 12 | 5913 |
| 13 | 8189 |
| 14 | 7545 |
| 15 | 64989 |
| 16 | 94489 |
| 17 | 122365 |
| 18 | 113529 |
| 19 | 1037789 |
| 20 | 1507609 |
| 21 | 1965565 |
| 22 | 1833849 |
| 23 | 16635357 |
| 24 | 24346905 |
| 25 | 31325693 |
| 26 | 28441465 |
| 27 | 268424669 |
| 28 | 399868185 |
| 29 | 534248957 |
| 30 | 352844665 |
| 31 | 3590182365 |
| 32 | 6498779417 |
| 33 | 17137270269 |
[1,1,1,13,25,61,121,221,409,1021,1913,4061,5913, 8189,7545,64989,94489,122365,113529,1037789, 1507609,1965565,1833849,16635357,24346905, 31325693,28441465,268424669,399868185,534248957, 352844665,3590182365,6498779417,17137270269] |