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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 4 |
| 3 | 17 |
| 4 | 49 |
| 5 | 111 |
| 6 | 219 |
| 7 | 390 |
| 8 | 646 |
| 9 | 1010 |
| 10 | 1510 |
| 11 | 2175 |
| 12 | 3039 |
| 13 | 4137 |
| 14 | 5509 |
| 15 | 7196 |
| 16 | 9244 |
| 17 | 11700 |
| 18 | 14616 |
| 19 | 18045 |
| 20 | 22045 |
| 21 | 26675 |
| 22 | 31999 |
| 23 | 38082 |
| 24 | 44994 |
| 25 | 52806 |
| 26 | 61594 |
| 27 | 71435 |
| 28 | 82411 |
| 29 | 94605 |
| 30 | 108105 |
| 31 | 123000 |
| 32 | 139384 |
| 33 | 157352 |
| 34 | 177004 |
| 35 | 198441 |
| 36 | 221769 |
| 37 | 247095 |
| 38 | 274531 |
| 39 | 304190 |
| 40 | 336190 |
| 41 | 370650 |
| 42 | 407694 |
| 43 | 447447 |
| 44 | 490039 |
| 45 | 535601 |
| 46 | 584269 |
| 47 | 636180 |
| 48 | 691476 |
| 49 | 750300 |
| 50 | 812800 |
[0,0,4,17,49,111,219,390,646,1010,1510,2175,3039, 4137,5509,7196,9244,11700,14616,18045,22045,26675, 31999,38082,44994,52806,61594,71435,82411,94605, 108105,123000,139384,157352,177004,198441,221769, 247095,274531,304190,336190,370650,407694,447447, 490039,535601,584269,636180,691476,750300,812800] |