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A138807 as a simple table

n a(n)
0 0
1 1
2 3
3 10
4 37
5 128
6 439
7 1508
8 5179
9 17779
10 61033
11 209522
12 719266
13 2469165
14 8476377
15 29098491
16 99891986
17 342918422
18 1177201983
19 4041207525
20 13873029857
21 47624616207
22 163490174266
23 561244146614

[0,1,3,10,37,128,439,1508,5179,17779,61033,209522,
 719266,2469165,8476377,29098491,99891986,
 342918422,1177201983,4041207525,13873029857,
 47624616207,163490174266,561244146614]

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)