The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 2 |
| 4 | 6 |
| 5 | 8 |
| 6 | 20 |
| 7 | 26 |
| 8 | 48 |
| 9 | 66 |
| 10 | 114 |
| 11 | 154 |
| 12 | 240 |
| 13 | 326 |
| 14 | 490 |
| 15 | 656 |
| 16 | 940 |
| 17 | 1252 |
| 18 | 1752 |
| 19 | 2306 |
| 20 | 3142 |
| 21 | 4104 |
| 22 | 5500 |
| 23 | 7114 |
| 24 | 9372 |
| 25 | 12030 |
| 26 | 15656 |
| 27 | 19932 |
| 28 | 25628 |
| 29 | 32402 |
| 30 | 41270 |
| 31 | 51816 |
| 32 | 65400 |
| 33 | 81608 |
| 34 | 102226 |
| 35 | 126800 |
| 36 | 157698 |
| 37 | 194550 |
| 38 | 240454 |
| 39 | 295110 |
| 40 | 362600 |
| 41 | 442902 |
| 42 | 541342 |
| 43 | 658230 |
[0,0,2,2,6,8,20,26,48,66,114,154,240,326,490,656, 940,1252,1752,2306,3142,4104,5500,7114,9372,12030, 15656,19932,25628,32402,41270,51816,65400,81608, 102226,126800,157698,194550,240454,295110,362600, 442902,541342,658230] |