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| n | a(n) |
|---|---|
| 1 | 64 |
| 2 | 732 |
| 3 | 4392 |
| 4 | 18890 |
| 5 | 66532 |
| 6 | 205628 |
| 7 | 580664 |
| 8 | 1536814 |
| 9 | 3877300 |
| 10 | 9434784 |
| 11 | 22327496 |
| 12 | 51698178 |
| 13 | 117645348 |
| 14 | 263992580 |
| 15 | 585640568 |
| 16 | 1286898262 |
| 17 | 2805399156 |
| 18 | 6074441896 |
| 19 | 13076687560 |
| 20 | 28009586346 |
| 21 | 59732295204 |
| 22 | 126891641612 |
| 23 | 268638308152 |
| 24 | 566987715710 |
[64,732,4392,18890,66532,205628,580664,1536814, 3877300,9434784,22327496,51698178,117645348, 263992580,585640568,1286898262,2805399156, 6074441896,13076687560,28009586346,59732295204, 126891641612,268638308152,566987715710] |