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Nominations for sequence A400000 are open, see here.
Nominations for sequence A400000 are open, see here.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 0 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 2 |
| 8 | 4 |
| 9 | 5 |
| 10 | 10 |
| 11 | 14 |
| 12 | 26 |
| 13 | 42 |
| 14 | 78 |
| 15 | 132 |
| 16 | 249 |
| 17 | 445 |
| 18 | 842 |
| 19 | 1561 |
| 20 | 2988 |
| 21 | 5671 |
| 22 | 10981 |
| 23 | 21209 |
| 24 | 41472 |
| 25 | 81181 |
| 26 | 160176 |
| 27 | 316749 |
| 28 | 629933 |
| 29 | 1256070 |
| 30 | 2515169 |
| 31 | 5049816 |
| 32 | 10172638 |
| 33 | 20543579 |
| 34 | 41602425 |
| 35 | 84440886 |
| 36 | 171794492 |
| 37 | 350238175 |
| 38 | 715497037 |
| 39 | 1464407113 |
[0,1,1,0,1,1,2,2,4,5,10,14,26,42,78,132,249,445, 842,1561,2988,5671,10981,21209,41472,81181,160176, 316749,629933,1256070,2515169,5049816,10172638, 20543579,41602425,84440886,171794492,350238175, 715497037,1464407113] |