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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 13 |
| 6 | 18 |
| 7 | 22 |
| 8 | 28 |
| 9 | 33 |
| 10 | 40 |
| 11 | 46 |
| 12 | 54 |
| 13 | 61 |
| 14 | 70 |
| 15 | 78 |
| 16 | 88 |
| 17 | 97 |
| 18 | 108 |
| 19 | 118 |
| 20 | 130 |
| 21 | 141 |
| 22 | 154 |
| 23 | 166 |
| 24 | 180 |
| 25 | 193 |
| 26 | 208 |
| 27 | 222 |
| 28 | 238 |
| 29 | 253 |
| 30 | 270 |
| 31 | 286 |
| 32 | 304 |
| 33 | 321 |
| 34 | 340 |
| 35 | 358 |
| 36 | 378 |
| 37 | 397 |
| 38 | 418 |
| 39 | 438 |
| 40 | 460 |
| 41 | 481 |
| 42 | 504 |
| 43 | 526 |
| 44 | 550 |
| 45 | 573 |
| 46 | 598 |
| 47 | 622 |
| 48 | 648 |
| 49 | 673 |
| 50 | 700 |
| 51 | 726 |
| 52 | 754 |
| 53 | 781 |
| 54 | 810 |
| 55 | 838 |
[0,1,4,6,10,13,18,22,28,33,40,46,54,61,70,78,88, 97,108,118,130,141,154,166,180,193,208,222,238, 253,270,286,304,321,340,358,378,397,418,438,460, 481,504,526,550,573,598,622,648,673,700,726,754, 781,810,838] |