n | a(n) |
---|---|
1 | 0 |
2 | 0 |
3 | 0 |
4 | 2 |
5 | 23 |
6 | 127 |
7 | 468 |
8 | 1352 |
9 | 3310 |
10 | 7190 |
11 | 14260 |
12 | 26330 |
13 | 45885 |
14 | 76237 |
15 | 121688 |
16 | 187712 |
17 | 281148 |
18 | 410412 |
19 | 585720 |
20 | 819330 |
21 | 1125795 |
22 | 1522235 |
23 | 2028620 |
24 | 2668072 |
25 | 3467178 |
26 | 4456322 |
27 | 5670028 |
28 | 7147322 |
29 | 8932105 |
30 | 11073545 |
31 | 13626480 |
32 | 16651840 |
33 | 20217080 |
[0,0,0,2,23,127,468,1352,3310,7190,14260,26330, 45885,76237,121688,187712,281148,410412,585720, 819330,1125795,1522235,2028620,2668072,3467178, 4456322,5670028,7147322,8932105,11073545,13626480, 16651840,20217080] |