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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 20 |
| 3 | 51 |
| 4 | 104 |
| 5 | 186 |
| 6 | 301 |
| 7 | 457 |
| 8 | 659 |
| 9 | 913 |
| 10 | 1226 |
| 11 | 1602 |
| 12 | 2049 |
| 13 | 2572 |
| 14 | 3177 |
| 15 | 3870 |
| 16 | 4658 |
| 17 | 5546 |
| 18 | 6540 |
| 19 | 7646 |
| 20 | 8870 |
| 21 | 10219 |
| 22 | 11698 |
| 23 | 13313 |
| 24 | 15070 |
| 25 | 16975 |
| 26 | 19035 |
| 27 | 21254 |
| 28 | 23640 |
| 29 | 26199 |
| 30 | 28935 |
| 31 | 31856 |
| 32 | 34966 |
| 33 | 38273 |
| 34 | 41782 |
| 35 | 45500 |
| 36 | 49431 |
| 37 | 53583 |
| 38 | 57961 |
| 39 | 62571 |
[5,20,51,104,186,301,457,659,913,1226,1602,2049, 2572,3177,3870,4658,5546,6540,7646,8870,10219, 11698,13313,15070,16975,19035,21254,23640,26199, 28935,31856,34966,38273,41782,45500,49431,53583, 57961,62571] |