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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 40 |
| 3 | 140 |
| 4 | 336 |
| 5 | 660 |
| 6 | 1144 |
| 7 | 1820 |
| 8 | 2720 |
| 9 | 3876 |
| 10 | 5320 |
| 11 | 7084 |
| 12 | 9200 |
| 13 | 11700 |
| 14 | 14616 |
| 15 | 17980 |
| 16 | 21824 |
| 17 | 26180 |
| 18 | 31080 |
| 19 | 36556 |
| 20 | 42640 |
| 21 | 49364 |
| 22 | 56760 |
| 23 | 64860 |
| 24 | 73696 |
| 25 | 83300 |
| 26 | 93704 |
| 27 | 104940 |
| 28 | 117040 |
| 29 | 130036 |
| 30 | 143960 |
| 31 | 158844 |
| 32 | 174720 |
| 33 | 191620 |
| 34 | 209576 |
| 35 | 228620 |
| 36 | 248784 |
[4,40,140,336,660,1144,1820,2720,3876,5320,7084, 9200,11700,14616,17980,21824,26180,31080,36556, 42640,49364,56760,64860,73696,83300,93704,104940, 117040,130036,143960,158844,174720,191620,209576, 228620,248784] |