n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 25 |
3 | 185 |
4 | 1503 |
5 | 12958 |
6 | 116410 |
7 | 1077872 |
8 | 10213954 |
9 | 98574454 |
10 | 965545161 |
11 | 9574235477 |
12 | 95920415338 |
13 | 969467658540 |
14 | 9872949735243 |
15 | 101211280459929 |
16 | 1043597450013094 |
17 | 10816134194658976 |
18 | 112617367970103163 |
19 | 1177413807406659659 |
20 | 12355753915291229596 |
[1,4,25,185,1503,12958,116410,1077872,10213954, 98574454,965545161,9574235477,95920415338, 969467658540,9872949735243,101211280459929, 1043597450013094,10816134194658976, 112617367970103163,1177413807406659659, 12355753915291229596] |