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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 2 |
| 3 | 26 |
| 4 | 72 |
| 5 | 374 |
| 6 | 516 |
| 7 | 2064 |
| 8 | 3634 |
| 9 | 7706 |
| 10 | 10472 |
| 11 | 25832 |
| 12 | 34298 |
| 13 | 70946 |
| 14 | 90106 |
| 15 | 128664 |
| 16 | 177428 |
| 17 | 317024 |
| 18 | 376150 |
| 19 | 623276 |
| 20 | 757856 |
| 21 | 987038 |
| 22 | 1189074 |
| 23 | 1829210 |
| 24 | 2094022 |
| 25 | 2885790 |
| 26 | 3380040 |
| 27 | 4348400 |
| 28 | 5089782 |
| 29 | 7135460 |
| 30 | 7836276 |
| 31 | 10701330 |
| 32 | 12423438 |
| 33 | 14837870 |
| 34 | 16813314 |
| 35 | 20405200 |
[0,2,26,72,374,516,2064,3634,7706,10472,25832, 34298,70946,90106,128664,177428,317024,376150, 623276,757856,987038,1189074,1829210,2094022, 2885790,3380040,4348400,5089782,7135460,7836276, 10701330,12423438,14837870,16813314,20405200] |