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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 28 |
| 4 | 112 |
| 5 | 210 |
| 6 | 658 |
| 7 | 924 |
| 8 | 2388 |
| 9 | 3409 |
| 10 | 6475 |
| 11 | 8008 |
| 12 | 18746 |
| 13 | 18564 |
| 14 | 33600 |
| 15 | 44640 |
| 16 | 72408 |
| 17 | 74613 |
| 18 | 137746 |
| 19 | 134596 |
| 20 | 235655 |
| 21 | 256102 |
| 22 | 352066 |
| 23 | 376740 |
| 24 | 680260 |
| 25 | 615930 |
| 26 | 866229 |
| 27 | 994336 |
| 28 | 1400980 |
| 29 | 1344904 |
| 30 | 2172800 |
| 31 | 1947792 |
| 32 | 2929332 |
| 33 | 2984905 |
| 34 | 3784914 |
| 35 | 4032420 |
| 36 | 6128858 |
| 37 | 5245786 |
[1,7,28,112,210,658,924,2388,3409,6475,8008,18746, 18564,33600,44640,72408,74613,137746,134596, 235655,256102,352066,376740,680260,615930,866229, 994336,1400980,1344904,2172800,1947792,2929332, 2984905,3784914,4032420,6128858,5245786] |