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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 16 |
| 4 | 38 |
| 5 | 96 |
| 6 | 204 |
| 7 | 424 |
| 8 | 739 |
| 9 | 1265 |
| 10 | 2091 |
| 11 | 3264 |
| 12 | 4778 |
| 13 | 7129 |
| 14 | 10310 |
| 15 | 14444 |
| 16 | 19132 |
| 17 | 26141 |
| 18 | 34533 |
| 19 | 44872 |
| 20 | 57501 |
| 21 | 73871 |
| 22 | 93093 |
| 23 | 114872 |
| 24 | 139008 |
| 25 | 175160 |
| 26 | 211443 |
| 27 | 255138 |
| 28 | 306942 |
| 29 | 364337 |
| 30 | 431745 |
| 31 | 506052 |
| 32 | 586429 |
| 33 | 696565 |
| 34 | 803479 |
| 35 | 948280 |
| 36 | 1063150 |
| 37 | 1226084 |
| 38 | 1401161 |
| 39 | 1606425 |
| 40 | 1815322 |
[1,4,16,38,96,204,424,739,1265,2091,3264,4778, 7129,10310,14444,19132,26141,34533,44872,57501, 73871,93093,114872,139008,175160,211443,255138, 306942,364337,431745,506052,586429,696565,803479, 948280,1063150,1226084,1401161,1606425,1815322] |