The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 10 |
| 3 | 26 |
| 4 | 61 |
| 5 | 128 |
| 6 | 254 |
| 7 | 467 |
| 8 | 821 |
| 9 | 1376 |
| 10 | 2224 |
| 11 | 3470 |
| 12 | 5269 |
| 13 | 7785 |
| 14 | 11254 |
| 15 | 15930 |
| 16 | 22149 |
| 17 | 30276 |
| 18 | 40786 |
| 19 | 54177 |
| 20 | 71089 |
| 21 | 92198 |
| 22 | 118336 |
| 23 | 150386 |
| 24 | 189425 |
| 25 | 236573 |
| 26 | 293186 |
| 27 | 360680 |
| 28 | 440725 |
| 29 | 535070 |
| 30 | 645766 |
| 31 | 774933 |
| 32 | 925045 |
| 33 | 1098666 |
| 34 | 1298736 |
| 35 | 1528308 |
| 36 | 1790869 |
| 37 | 2090007 |
| 38 | 2429806 |
| 39 | 2814476 |
| 40 | 3248749 |
[1,3,10,26,61,128,254,467,821,1376,2224,3470,5269, 7785,11254,15930,22149,30276,40786,54177,71089, 92198,118336,150386,189425,236573,293186,360680, 440725,535070,645766,774933,925045,1098666, 1298736,1528308,1790869,2090007,2429806,2814476, 3248749] |