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A074763 as a simple table
| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 1 |
| 3 | 4 |
| 4 | 4 |
| 5 | 8 |
| 6 | 10 |
| 7 | 20 |
| 8 | 34 |
| 9 | 60 |
| 10 | 100 |
| 11 | 188 |
| 12 | 348 |
| 13 | 632 |
| 14 | 1162 |
| 15 | 2192 |
| 16 | 4114 |
| 17 | 7712 |
| 18 | 14542 |
| 19 | 27596 |
| 20 | 52480 |
| 21 | 99880 |
| 22 | 190558 |
| 23 | 364724 |
| 24 | 699248 |
| 25 | 1342184 |
| 26 | 2580796 |
| 27 | 4971068 |
| 28 | 9587560 |
| 29 | 18512792 |
| 30 | 35790376 |
| 31 | 69273668 |
| 32 | 134219794 |
| 33 | 260301176 |
| 34 | 505286416 |
| 35 | 981706832 |
[2,1,4,4,8,10,20,34,60,100,188,348,632,1162,2192, 4114,7712,14542,27596,52480,99880,190558,364724, 699248,1342184,2580796,4971068,9587560,18512792, 35790376,69273668,134219794,260301176,505286416, 981706832] |