n | a(n) |
---|---|
18 | 1 |
19 | 19 |
20 | 190 |
21 | 1330 |
22 | 7315 |
23 | 33649 |
24 | 134596 |
25 | 480700 |
26 | 1562275 |
27 | 4686825 |
28 | 13123110 |
29 | 34597290 |
30 | 86493225 |
31 | 206253075 |
32 | 471435600 |
33 | 1037158320 |
34 | 2203961430 |
35 | 4537567650 |
36 | 9075135300 |
37 | 17672631900 |
38 | 33578000610 |
39 | 62359143990 |
40 | 113380261800 |
41 | 202112640600 |
42 | 353697121050 |
43 | 608359048206 |
[1,19,190,1330,7315,33649,134596,480700,1562275, 4686825,13123110,34597290,86493225,206253075, 471435600,1037158320,2203961430,4537567650, 9075135300,17672631900,33578000610,62359143990, 113380261800,202112640600,353697121050, 608359048206] |