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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 6 |
| 3 | 12 |
| 4 | 24 |
| 5 | 40 |
| 6 | 72 |
| 7 | 112 |
| 8 | 192 |
| 9 | 288 |
| 10 | 480 |
| 11 | 704 |
| 12 | 1152 |
| 13 | 1664 |
| 14 | 2688 |
| 15 | 3840 |
| 16 | 6144 |
| 17 | 8704 |
| 18 | 13824 |
| 19 | 19456 |
| 20 | 30720 |
| 21 | 43008 |
| 22 | 67584 |
| 23 | 94208 |
| 24 | 147456 |
| 25 | 204800 |
| 26 | 319488 |
| 27 | 442368 |
| 28 | 688128 |
| 29 | 950272 |
| 30 | 1474560 |
| 31 | 2031616 |
| 32 | 3145728 |
| 33 | 4325376 |
| 34 | 6684672 |
| 35 | 9175040 |
| 36 | 14155776 |
| 37 | 19398656 |
| 38 | 29884416 |
| 39 | 40894464 |
| 40 | 62914560 |
| 41 | 85983232 |
[0,2,6,12,24,40,72,112,192,288,480,704,1152,1664, 2688,3840,6144,8704,13824,19456,30720,43008,67584, 94208,147456,204800,319488,442368,688128,950272, 1474560,2031616,3145728,4325376,6684672,9175040, 14155776,19398656,29884416,40894464,62914560, 85983232] |