The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 4 |
| 4 | 11 |
| 5 | 21 |
| 6 | 41 |
| 7 | 57 |
| 8 | 439 |
| 9 | 640 |
| 10 | 909 |
| 11 | 1222 |
| 12 | 1859 |
| 13 | 2354 |
| 14 | 2953 |
| 15 | 3616 |
| 16 | 61167 |
| 17 | 78303 |
| 18 | 98837 |
| 19 | 123121 |
| 20 | 152379 |
| 21 | 185641 |
| 22 | 224113 |
| 23 | 268227 |
| 24 | 344999 |
| 25 | 405601 |
| 26 | 473901 |
| 27 | 550423 |
| 28 | 637363 |
| 29 | 732483 |
| 30 | 837929 |
| 31 | 954305 |
| 32 | 32472031 |
| 33 | 37912414 |
| 34 | 44058661 |
| 35 | 50977186 |
| 36 | 58741163 |
| 37 | 67420476 |
[0,1,1,4,11,21,41,57,439,640,909,1222,1859,2354, 2953,3616,61167,78303,98837,123121,152379,185641, 224113,268227,344999,405601,473901,550423,637363, 732483,837929,954305,32472031,37912414,44058661, 50977186,58741163,67420476] |