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A099621 as a simple table

n a(n)
0 0
1 1
2 6
3 31
4 144
5 637
6 2730
7 11467
8 47508
9 194953
10 794574
11 3222583
12 13023192
13 52491349
14 211161138
15 848231779
16 3403688796
17 13647040225
18 54685016022
19 219030629455
20 876994213920
21 3510591943981
22 14050213040826
23 56224387958011

[0,1,6,31,144,637,2730,11467,47508,194953,794574,
 3222583,13023192,52491349,211161138,848231779,
 3403688796,13647040225,54685016022,219030629455,
 876994213920,3510591943981,14050213040826,
 56224387958011]

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Last modified June 6 19:21 EDT 2024. Contains 373134 sequences. (Running on oeis4.)