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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 5 |
| 5 | 14 |
| 6 | 22 |
| 7 | 43 |
| 8 | 63 |
| 9 | 97 |
| 10 | 140 |
| 11 | 201 |
| 12 | 266 |
| 13 | 371 |
| 14 | 492 |
| 15 | 638 |
| 16 | 837 |
| 17 | 1079 |
| 18 | 1377 |
| 19 | 1748 |
| 20 | 2207 |
| 21 | 2756 |
| 22 | 3471 |
| 23 | 4287 |
| 24 | 5317 |
| 25 | 6537 |
| 26 | 8081 |
| 27 | 9840 |
| 28 | 12069 |
| 29 | 14643 |
| 30 | 17837 |
| 31 | 21543 |
| 32 | 26113 |
| 33 | 31385 |
| 34 | 37877 |
| 35 | 45318 |
| 36 | 54433 |
| 37 | 64944 |
| 38 | 77682 |
| 39 | 92341 |
| 40 | 109995 |
| 41 | 130373 |
| 42 | 154769 |
| 43 | 182866 |
| 44 | 216350 |
| 45 | 254905 |
| 46 | 300648 |
| 47 | 353259 |
| 48 | 415392 |
| 49 | 486843 |
| 50 | 570867 |
[0,0,2,5,14,22,43,63,97,140,201,266,371,492,638, 837,1079,1377,1748,2207,2756,3471,4287,5317,6537, 8081,9840,12069,14643,17837,21543,26113,31385, 37877,45318,54433,64944,77682,92341,109995,130373, 154769,182866,216350,254905,300648,353259,415392, 486843,570867] |