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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 26 |
| 2 | 435 |
| 3 | 5980 |
| 4 | 73721 |
| 5 | 849966 |
| 6 | 9381535 |
| 7 | 100546160 |
| 8 | 1055929941 |
| 9 | 10932713506 |
| 10 | 112061907035 |
| 11 | 1140487891140 |
| 12 | 11548313690161 |
| 13 | 116513300146646 |
| 14 | 1172500867726935 |
| 15 | 11777524096712920 |
| 16 | 118148491080002381 |
| 17 | 1184131514779885386 |
| 18 | 11860044495183801235 |
[1,26,435,5980,73721,849966,9381535,100546160, 1055929941,10932713506,112061907035,1140487891140, 11548313690161,116513300146646,1172500867726935, 11777524096712920,118148491080002381, 1184131514779885386,11860044495183801235] |