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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 22 |
| 3 | 8 |
| 4 | 43 |
| 5 | 73 |
| 6 | 161 |
| 7 | 181 |
| 8 | 540 |
| 9 | 1076 |
| 10 | 2572 |
| 11 | 5179 |
| 12 | 11814 |
| 13 | 27638 |
| 14 | 63592 |
| 15 | 145715 |
| 16 | 332492 |
| 17 | 772416 |
| 18 | 1792330 |
| 19 | 4152863 |
| 20 | 9615009 |
| 21 | 22287060 |
| 22 | 51774292 |
| 23 | 120261321 |
| 24 | 279370852 |
| 25 | 649021245 |
| 26 | 1508490144 |
| 27 | 3507212748 |
| 28 | 8154848055 |
| 29 | 18962917850 |
| 30 | 44099995183 |
[0,22,8,43,73,161,181,540,1076,2572,5179,11814, 27638,63592,145715,332492,772416,1792330,4152863, 9615009,22287060,51774292,120261321,279370852, 649021245,1508490144,3507212748,8154848055, 18962917850,44099995183] |