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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 | 0 |
| 2 | 2 |
| 3 | 1 |
| 4 | 8 |
| 5 | 12 |
| 6 | 45 |
| 7 | 113 |
| 8 | 341 |
| 9 | 1018 |
| 10 | 3095 |
| 11 | 9555 |
| 12 | 30324 |
| 13 | 95537 |
| 14 | 309763 |
| 15 | 1002577 |
| 16 | 3285362 |
| 17 | 10859463 |
| 18 | 36025440 |
| 19 | 120586518 |
| 20 | 405317722 |
| 21 | 1369340161 |
| 22 | 4651457133 |
| 23 | 15854097472 |
| 24 | 54284662488 |
| 25 | 186521139750 |
| 26 | 642995941300 |
| 27 | 2224213237576 |
| 28 | 7715127092600 |
| 29 | 26838793844166 |
| 30 | 93608792582527 |
| 31 | 327272805790058 |
| 32 | 1146930142662274 |
[1,0,2,1,8,12,45,113,341,1018,3095,9555,30324, 95537,309763,1002577,3285362,10859463,36025440, 120586518,405317722,1369340161,4651457133, 15854097472,54284662488,186521139750,642995941300, 2224213237576,7715127092600,26838793844166, 93608792582527,327272805790058,1146930142662274] |