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A020141 as a simple table
| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 12 |
| 4 | 21 |
| 5 | 85 |
| 6 | 105 |
| 7 | 231 |
| 8 | 244 |
| 9 | 276 |
| 10 | 357 |
| 11 | 427 |
| 12 | 561 |
| 13 | 1099 |
| 14 | 1785 |
| 15 | 1891 |
| 16 | 2465 |
| 17 | 2806 |
| 18 | 3605 |
| 19 | 5028 |
| 20 | 5149 |
| 21 | 5185 |
| 22 | 5565 |
| 23 | 6601 |
| 24 | 7107 |
| 25 | 8841 |
| 26 | 8911 |
| 27 | 9577 |
| 28 | 9637 |
| 29 | 10308 |
| 30 | 10585 |
| 31 | 11305 |
| 32 | 12403 |
| 33 | 12621 |
| 34 | 13019 |
| 35 | 13345 |
| 36 | 13461 |
| 37 | 13685 |
| 38 | 14491 |
| 39 | 14981 |
| 40 | 15051 |
| 41 | 15505 |
| 42 | 15841 |
| 43 | 17803 |
[4,6,12,21,85,105,231,244,276,357,427,561,1099, 1785,1891,2465,2806,3605,5028,5149,5185,5565,6601, 7107,8841,8911,9577,9637,10308,10585,11305,12403, 12621,13019,13345,13461,13685,14491,14981,15051, 15505,15841,17803] |