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A222204 as a simple table

n a(n)
0 1
1 1
2 3
3 18
4 54
5 1140
6 13903
7 99051
8 13049563
9 360783593
10 6044482889
11 4738211572702
12 303872744726644
13 11986520595161863
14 54755153078468134960
15 8217125138015950451626
16 764291947227525464744293
17 20119942924108379011391597989
18 7095967027221343377167292602835
19 1558052539448513320447263528275071

[1,1,3,18,54,1140,13903,99051,13049563,360783593,
 6044482889,4738211572702,303872744726644,
 11986520595161863,54755153078468134960,
 8217125138015950451626,764291947227525464744293,
 20119942924108379011391597989,
 7095967027221343377167292602835,
 1558052539448513320447263528275071]

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Last modified April 25 01:06 EDT 2024. Contains 371964 sequences. (Running on oeis4.)