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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 11 |
| 3 | 61 |
| 4 | 205 |
| 5 | 521 |
| 6 | 1111 |
| 7 | 2101 |
| 8 | 3641 |
| 9 | 5905 |
| 10 | 9091 |
| 11 | 13421 |
| 12 | 19141 |
| 13 | 26521 |
| 14 | 35855 |
| 15 | 47461 |
| 16 | 61681 |
| 17 | 78881 |
| 18 | 99451 |
| 19 | 123805 |
| 20 | 152381 |
| 21 | 185641 |
| 22 | 224071 |
| 23 | 268181 |
| 24 | 318505 |
| 25 | 375601 |
| 26 | 440051 |
| 27 | 512461 |
| 28 | 593461 |
| 29 | 683705 |
| 30 | 783871 |
| 31 | 894661 |
| 32 | 1016801 |
| 33 | 1151041 |
| 34 | 1298155 |
| 35 | 1458941 |
| 36 | 1634221 |
[1,1,11,61,205,521,1111,2101,3641,5905,9091,13421, 19141,26521,35855,47461,61681,78881,99451,123805, 152381,185641,224071,268181,318505,375601,440051, 512461,593461,683705,783871,894661,1016801, 1151041,1298155,1458941,1634221] |