The OEIS is supported by the many generous donors to the OEIS Foundation.
A020246 as a simple table
| n | a(n) |
|---|---|
| 1 | 21 |
| 2 | 671 |
| 3 | 889 |
| 4 | 1891 |
| 5 | 2059 |
| 6 | 2761 |
| 7 | 5461 |
| 8 | 7999 |
| 9 | 13051 |
| 10 | 15311 |
| 11 | 16441 |
| 12 | 21667 |
| 13 | 25681 |
| 14 | 34861 |
| 15 | 37901 |
| 16 | 38989 |
| 17 | 42127 |
| 18 | 49771 |
| 19 | 50737 |
| 20 | 54811 |
| 21 | 64681 |
| 22 | 68251 |
| 23 | 78961 |
| 24 | 85591 |
| 25 | 88831 |
| 26 | 92509 |
| 27 | 93031 |
| 28 | 96049 |
| 29 | 97921 |
| 30 | 105001 |
| 31 | 109061 |
| 32 | 111361 |
| 33 | 114841 |
| 34 | 123713 |
| 35 | 143009 |
| 36 | 145351 |
[21,671,889,1891,2059,2761,5461,7999,13051,15311, 16441,21667,25681,34861,37901,38989,42127,49771, 50737,54811,64681,68251,78961,85591,88831,92509, 93031,96049,97921,105001,109061,111361,114841, 123713,143009,145351] |