n | a(n) |
---|---|
0 | 0 |
1 | 1 |
2 | 4 |
3 | 20 |
4 | 116 |
5 | 776 |
6 | 5912 |
7 | 50648 |
8 | 482552 |
9 | 5065016 |
10 | 58099832 |
11 | 723315128 |
12 | 9715154552 |
13 | 140051879096 |
14 | 2157103991672 |
15 | 35355232693688 |
16 | 614453167841912 |
17 | 11287370521073336 |
18 | 218535622980161912 |
19 | 4447889360078673848 |
20 | 94944254697268017272 |
21 | 2120984032794061422776 |
22 | 49489160848954807154552 |
23 | 1203943675008917425902008 |
24 | 30486416629523244528307832 |
[0,1,4,20,116,776,5912,50648,482552,5065016, 58099832,723315128,9715154552,140051879096, 2157103991672,35355232693688,614453167841912, 11287370521073336,218535622980161912, 4447889360078673848,94944254697268017272, 2120984032794061422776,49489160848954807154552, 1203943675008917425902008, 30486416629523244528307832] |