n | a(n) |
---|---|
1 | 2 |
2 | 1 |
3 | 4 |
4 | 7 |
5 | 24 |
6 | 62 |
7 | 216 |
8 | 710 |
9 | 2570 |
10 | 9215 |
11 | 34146 |
12 | 126853 |
13 | 477182 |
14 | 1802673 |
15 | 6853152 |
16 | 26153758 |
17 | 100215818 |
18 | 385226201 |
19 | 1485248464 |
20 | 5741275753 |
21 | 22246121356 |
22 | 86383454582 |
23 | 336094015456 |
24 | 1309998396933 |
25 | 5114454089528 |
26 | 19998173763831 |
27 | 78306021876974 |
28 | 307022186132259 |
29 | 1205243906123956 |
30 | 4736694016531135 |
[2,1,4,7,24,62,216,710,2570,9215,34146,126853, 477182,1802673,6853152,26153758,100215818, 385226201,1485248464,5741275753,22246121356, 86383454582,336094015456,1309998396933, 5114454089528,19998173763831,78306021876974, 307022186132259,1205243906123956,4736694016531135] |