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A224893 as a simple table
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | 0 |
| 14 | 0 |
| 15 | 4 |
| 16 | 2 |
| 17 | 14 |
| 18 | 16 |
| 19 | 42 |
| 20 | 92 |
| 21 | 208 |
| 22 | 382 |
| 23 | 834 |
| 24 | 1748 |
| 25 | 3568 |
| 26 | 7066 |
| 27 | 14914 |
| 28 | 28618 |
| 29 | 60712 |
| 30 | 120872 |
| 31 | 240102 |
| 32 | 483328 |
| 33 | 992812 |
| 34 | 1948804 |
| 35 | 3975364 |
| 36 | 7933368 |
| 37 | 15876692 |
| 38 | 31759760 |
| 39 | 64035868 |
| 40 | 126968066 |
| 41 | 255821994 |
[0,0,0,0,0,0,0,0,0,0,0,0,0,0,4,2,14,16,42,92,208, 382,834,1748,3568,7066,14914,28618,60712,120872, 240102,483328,992812,1948804,3975364,7933368, 15876692,31759760,64035868,126968066,255821994] |