n | a(n) |
---|---|
0 | 1 |
1 | 1 |
2 | 3 |
3 | 13 |
4 | 73 |
5 | 501 |
6 | 4051 |
7 | 37633 |
8 | 394353 |
9 | 4233673 |
10 | 51683491 |
11 | 684364341 |
12 | 9755819833 |
13 | 148749428413 |
14 | 2411870539443 |
15 | 41369113878121 |
16 | 746931540551521 |
17 | 14128241450715153 |
18 | 281805883597349443 |
19 | 5880463849670410333 |
20 | 128050607992266620841 |
21 | 2903233047048502113541 |
[1,1,3,13,73,501,4051,37633,394353,4233673, 51683491,684364341,9755819833,148749428413, 2411870539443,41369113878121,746931540551521, 14128241450715153,281805883597349443, 5880463849670410333,128050607992266620841, 2903233047048502113541] |