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| n | a(n) |
|---|---|
| 0 | 21558 |
| 1 | 141686 |
| 2 | 825078 |
| 3 | 4438006 |
| 4 | 22578678 |
| 5 | 110311926 |
| 6 | 522899958 |
| 7 | 2422104566 |
| 8 | 11019370998 |
| 9 | 49421451766 |
| 10 | 219106574838 |
| 11 | 962208334326 |
| 12 | 4192177750518 |
| 13 | 18142557897206 |
| 14 | 78066631049718 |
| 15 | 334254292599286 |
| 16 | 1424972878709238 |
| 17 | 6051724204704246 |
| 18 | 25614248465924598 |
| 19 | 108086444576211446 |
| 20 | 454863674100679158 |
[21558,141686,825078,4438006,22578678,110311926, 522899958,2422104566,11019370998,49421451766, 219106574838,962208334326,4192177750518, 18142557897206,78066631049718,334254292599286, 1424972878709238,6051724204704246, 25614248465924598,108086444576211446, 454863674100679158] |