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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 2 |
| 3 | 6 |
| 4 | 18 |
| 5 | 30 |
| 6 | 50 |
| 7 | 70 |
| 8 | 98 |
| 9 | 118 |
| 10 | 162 |
| 11 | 198 |
| 12 | 226 |
| 13 | 270 |
| 14 | 338 |
| 15 | 366 |
| 16 | 426 |
| 17 | 486 |
| 18 | 554 |
| 19 | 622 |
| 20 | 682 |
| 21 | 726 |
| 22 | 842 |
| 23 | 926 |
| 24 | 986 |
| 25 | 1062 |
| 26 | 1202 |
| 27 | 1270 |
| 28 | 1362 |
| 29 | 1470 |
| 30 | 1562 |
| 31 | 1678 |
| 32 | 1802 |
| 33 | 1878 |
| 34 | 2066 |
| 35 | 2158 |
| 36 | 2250 |
| 37 | 2390 |
| 38 | 2602 |
| 39 | 2694 |
| 40 | 2818 |
| 41 | 2974 |
| 42 | 3114 |
| 43 | 3278 |
| 44 | 3434 |
| 45 | 3526 |
| 46 | 3786 |
| 47 | 3966 |
| 48 | 4090 |
| 49 | 4254 |
| 50 | 4490 |
[0,0,2,6,18,30,50,70,98,118,162,198,226,270,338, 366,426,486,554,622,682,726,842,926,986,1062,1202, 1270,1362,1470,1562,1678,1802,1878,2066,2158,2250, 2390,2602,2694,2818,2974,3114,3278,3434,3526,3786, 3966,4090,4254,4490] |