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A243744 as a simple table
| n | a(n) |
|---|---|
| 9 | 1 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 0 |
| 18 | 1 |
| 19 | 10 |
| 20 | 55 |
| 21 | 220 |
| 22 | 715 |
| 23 | 2002 |
| 24 | 5005 |
| 25 | 11440 |
| 26 | 24310 |
| 27 | 48621 |
| 28 | 92388 |
| 29 | 168025 |
| 30 | 294260 |
| 31 | 498850 |
| 32 | 822712 |
| 33 | 1327029 |
| 34 | 2107325 |
| 35 | 3324750 |
| 36 | 5280276 |
| 37 | 8595025 |
| 38 | 14648920 |
| 39 | 26637015 |
| 40 | 52076915 |
| 41 | 108669142 |
| 42 | 237787000 |
| 43 | 535084341 |
| 44 | 1219016810 |
| 45 | 2782344676 |
[1,0,0,0,0,0,0,0,0,1,10,55,220,715,2002,5005, 11440,24310,48621,92388,168025,294260,498850, 822712,1327029,2107325,3324750,5280276,8595025, 14648920,26637015,52076915,108669142,237787000, 535084341,1219016810,2782344676] |