n | a(n) |
---|---|
1 | 2 |
2 | 7 |
3 | 18 |
4 | 28 |
5 | 182 |
6 | 845 |
7 | 904 |
8 | 5235 |
9 | 36028 |
10 | 74713 |
11 | 526624 |
12 | 977572 |
13 | 4709369 |
14 | 9959574 |
15 | 96696762 |
16 | 7724076630 |
17 | 35354759457 |
18 | 138217852516 |
19 | 642742746639 |
20 | 1932003059921 |
21 | 8174135966290 |
22 | 43572900334295 |
23 | 260595630738132 |
24 | 328627943490763 |
25 | 2338298807531952 |
26 | 5101901157383418 |
[2,7,18,28,182,845,904,5235,36028,74713,526624, 977572,4709369,9959574,96696762,7724076630, 35354759457,138217852516,642742746639, 1932003059921,8174135966290,43572900334295, 260595630738132,328627943490763,2338298807531952, 5101901157383418] |