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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 6 |
| 3 | 16 |
| 4 | 40 |
| 5 | 100 |
| 6 | 251 |
| 7 | 631 |
| 8 | 1585 |
| 9 | 3981 |
| 10 | 10000 |
| 11 | 25119 |
| 12 | 63096 |
| 13 | 158489 |
| 14 | 398107 |
| 15 | 1000000 |
| 16 | 2511886 |
| 17 | 6309573 |
| 18 | 15848932 |
| 19 | 39810717 |
| 20 | 100000000 |
| 21 | 251188643 |
| 22 | 630957344 |
| 23 | 1584893192 |
| 24 | 3981071706 |
| 25 | 10000000000 |
| 26 | 25118864315 |
| 27 | 63095734448 |
| 28 | 158489319246 |
| 29 | 398107170553 |
| 30 | 1000000000000 |
[1,3,6,16,40,100,251,631,1585,3981,10000,25119, 63096,158489,398107,1000000,2511886,6309573, 15848932,39810717,100000000,251188643,630957344, 1584893192,3981071706,10000000000,25118864315, 63095734448,158489319246,398107170553, 1000000000000] |