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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 2 |
| 8 | 4 |
| 9 | 8 |
| 10 | 16 |
| 11 | 32 |
| 12 | 64 |
| 13 | 160 |
| 14 | 400 |
| 15 | 1000 |
| 16 | 2500 |
| 17 | 6250 |
| 18 | 15625 |
| 19 | 46875 |
| 20 | 140625 |
| 21 | 421875 |
| 22 | 1265625 |
| 23 | 3796875 |
| 24 | 11390625 |
| 25 | 39487500 |
| 26 | 136890000 |
| 27 | 474552000 |
| 28 | 1645113600 |
| 29 | 5703060480 |
| 30 | 19770609664 |
| 31 | 77181418496 |
| 32 | 301304383744 |
| 33 | 1176245959616 |
| 34 | 4591883265424 |
[1,1,1,1,1,1,1,2,4,8,16,32,64,160,400,1000,2500, 6250,15625,46875,140625,421875,1265625,3796875, 11390625,39487500,136890000,474552000,1645113600, 5703060480,19770609664,77181418496,301304383744, 1176245959616,4591883265424] |