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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 160 |
| 2 | 640 |
| 3 | 2440 |
| 4 | 9612 |
| 5 | 36976 |
| 6 | 145004 |
| 7 | 559736 |
| 8 | 2189924 |
| 9 | 8470344 |
| 10 | 33088100 |
| 11 | 128155456 |
| 12 | 500055876 |
| 13 | 1938715672 |
| 14 | 7558416852 |
| 15 | 29325538832 |
| 16 | 114258452900 |
| 17 | 443550616168 |
| 18 | 1727342374724 |
| 19 | 6708320872096 |
| 20 | 26115152683348 |
| 21 | 101452849075768 |
[160,640,2440,9612,36976,145004,559736,2189924, 8470344,33088100,128155456,500055876,1938715672, 7558416852,29325538832,114258452900,443550616168, 1727342374724,6708320872096,26115152683348, 101452849075768] |