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A300652 as a simple table

n a(n)
0 1
1 2
2 4
3 12
4 40
5 136
6 496
7 1952
8 7488
9 30368
10 123456
11 512384
12 2129664
13 9068672
14 38391552
15 165642752
16 713405952
17 3109135872
18 13528865792
19 59591322624
20 261549260800
21 1159547047936
22 5131968999424
23 22883893137408
24 101851069587456
25 456703499042816
26 2042949493276672

[1,2,4,12,40,136,496,1952,7488,30368,123456,
 512384,2129664,9068672,38391552,165642752,
 713405952,3109135872,13528865792,59591322624,
 261549260800,1159547047936,5131968999424,
 22883893137408,101851069587456,456703499042816,
 2042949493276672]

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Last modified March 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)