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A056182 as a simple table
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 2 |
| 2 | 10 |
| 3 | 38 |
| 4 | 130 |
| 5 | 422 |
| 6 | 1330 |
| 7 | 4118 |
| 8 | 12610 |
| 9 | 38342 |
| 10 | 116050 |
| 11 | 350198 |
| 12 | 1054690 |
| 13 | 3172262 |
| 14 | 9533170 |
| 15 | 28632278 |
| 16 | 85962370 |
| 17 | 258018182 |
| 18 | 774316690 |
| 19 | 2323474358 |
| 20 | 6971471650 |
| 21 | 20916512102 |
| 22 | 62753730610 |
| 23 | 188269580438 |
| 24 | 564825518530 |
| 25 | 1694510110022 |
| 26 | 5083597438930 |
| 27 | 15250926534518 |
| 28 | 45753048039010 |
[0,2,10,38,130,422,1330,4118,12610,38342,116050, 350198,1054690,3172262,9533170,28632278,85962370, 258018182,774316690,2323474358,6971471650, 20916512102,62753730610,188269580438,564825518530, 1694510110022,5083597438930,15250926534518, 45753048039010] |