The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 80 |
| 3 | 189 |
| 4 | 388 |
| 5 | 989 |
| 6 | 1650 |
| 7 | 2669 |
| 8 | 3730 |
| 9 | 4821 |
| 10 | 5930 |
| 11 | 7111 |
| 12 | 8712 |
| 13 | 10321 |
| 14 | 11990 |
| 15 | 13689 |
| 16 | 15500 |
| 17 | 17401 |
| 18 | 19400 |
| 19 | 25411 |
| 20 | 31502 |
| 21 | 37603 |
| 22 | 43802 |
| 23 | 50421 |
| 24 | 57082 |
| 25 | 63771 |
| 26 | 70462 |
| 27 | 77361 |
| 28 | 84352 |
| 29 | 94413 |
| 30 | 104482 |
| 31 | 114573 |
| 32 | 125264 |
| 33 | 136125 |
| 34 | 147034 |
| 35 | 158103 |
| 36 | 169784 |
[19,80,189,388,989,1650,2669,3730,4821,5930,7111, 8712,10321,11990,13689,15500,17401,19400,25411, 31502,37603,43802,50421,57082,63771,70462,77361, 84352,94413,104482,114573,125264,136125,147034, 158103,169784] |