The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2 |
| 6 | 2 |
| 7 | 5 |
| 8 | 6 |
| 9 | 11 |
| 10 | 14 |
| 11 | 20 |
| 12 | 25 |
| 13 | 40 |
| 14 | 46 |
| 15 | 71 |
| 16 | 86 |
| 17 | 125 |
| 18 | 149 |
| 19 | 213 |
| 20 | 257 |
| 21 | 351 |
| 22 | 425 |
| 23 | 562 |
| 24 | 683 |
| 25 | 896 |
| 26 | 1089 |
| 27 | 1397 |
| 28 | 1688 |
| 29 | 2138 |
| 30 | 2600 |
| 31 | 3256 |
| 32 | 3918 |
| 33 | 4880 |
| 34 | 5873 |
| 35 | 7218 |
| 36 | 8681 |
| 37 | 10618 |
| 38 | 12683 |
| 39 | 15428 |
| 40 | 18396 |
| 41 | 22242 |
| 42 | 26460 |
| 43 | 31798 |
| 44 | 37670 |
| 45 | 45134 |
| 46 | 53364 |
| 47 | 63520 |
| 48 | 74918 |
[0,1,0,0,0,2,2,5,6,11,14,20,25,40,46,71,86,125, 149,213,257,351,425,562,683,896,1089,1397,1688, 2138,2600,3256,3918,4880,5873,7218,8681,10618, 12683,15428,18396,22242,26460,31798,37670,45134, 53364,63520,74918] |