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| n | a(n) |
|---|---|
| 1 | 31 |
| 2 | 242 |
| 3 | 4893 |
| 4 | 65944 |
| 5 | 437225 |
| 6 | 1161126 |
| 7 | 2964127 |
| 8 | 5825588 |
| 9 | 10154739 |
| 10 | 15080020 |
| 11 | 22166471 |
| 12 | 30110772 |
| 13 | 44945803 |
| 14 | 64557704 |
| 15 | 87939735 |
| 16 | 132059086 |
| 17 | 186723797 |
| 18 | 273272598 |
| 19 | 371065129 |
| 20 | 533543630 |
| 21 | 723425661 |
| 22 | 990642712 |
| 23 | 1283752673 |
| 24 | 1590492954 |
| 25 | 2080592455 |
[31,242,4893,65944,437225,1161126,2964127,5825588, 10154739,15080020,22166471,30110772,44945803, 64557704,87939735,132059086,186723797,273272598, 371065129,533543630,723425661,990642712, 1283752673,1590492954,2080592455] |