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| n | a(n) |
|---|---|
| 0 | -1 |
| 1 | 2 |
| 2 | 23 |
| 3 | 80 |
| 4 | 191 |
| 5 | 374 |
| 6 | 647 |
| 7 | 1028 |
| 8 | 1535 |
| 9 | 2186 |
| 10 | 2999 |
| 11 | 3992 |
| 12 | 5183 |
| 13 | 6590 |
| 14 | 8231 |
| 15 | 10124 |
| 16 | 12287 |
| 17 | 14738 |
| 18 | 17495 |
| 19 | 20576 |
| 20 | 23999 |
| 21 | 27782 |
| 22 | 31943 |
| 23 | 36500 |
| 24 | 41471 |
| 25 | 46874 |
| 26 | 52727 |
| 27 | 59048 |
| 28 | 65855 |
| 29 | 73166 |
| 30 | 80999 |
| 31 | 89372 |
| 32 | 98303 |
| 33 | 107810 |
| 34 | 117911 |
| 35 | 128624 |
| 36 | 139967 |
| 37 | 151958 |
| 38 | 164615 |
| 39 | 177956 |
| 40 | 191999 |
[-1,2,23,80,191,374,647,1028,1535,2186,2999,3992, 5183,6590,8231,10124,12287,14738,17495,20576, 23999,27782,31943,36500,41471,46874,52727,59048, 65855,73166,80999,89372,98303,107810,117911, 128624,139967,151958,164615,177956,191999] |