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A057781 as a simple table
| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 5 |
| 2 | 20 |
| 3 | 85 |
| 4 | 260 |
| 5 | 629 |
| 6 | 1300 |
| 7 | 2405 |
| 8 | 4100 |
| 9 | 6565 |
| 10 | 10004 |
| 11 | 14645 |
| 12 | 20740 |
| 13 | 28565 |
| 14 | 38420 |
| 15 | 50629 |
| 16 | 65540 |
| 17 | 83525 |
| 18 | 104980 |
| 19 | 130325 |
| 20 | 160004 |
| 21 | 194485 |
| 22 | 234260 |
| 23 | 279845 |
| 24 | 331780 |
| 25 | 390629 |
| 26 | 456980 |
| 27 | 531445 |
| 28 | 614660 |
| 29 | 707285 |
| 30 | 810004 |
| 31 | 923525 |
| 32 | 1048580 |
| 33 | 1185925 |
[4,5,20,85,260,629,1300,2405,4100,6565,10004, 14645,20740,28565,38420,50629,65540,83525,104980, 130325,160004,194485,234260,279845,331780,390629, 456980,531445,614660,707285,810004,923525,1048580, 1185925] |