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A125023 as a simple table

n a(n)
0 1
1 2
2 5
3 12
4 31
5 78
6 208
7 551
8 1502
9 4117
10 11435
11 31926
12 89829
13 253727
14 719926
15 2048919
16 5848543
17 16732592
18 47973762
19 137788720
20 396393362
21 1141962118
22 3294080424
23 9512949813
24 27501182865
25 79579492065
26 230478715333

[1,2,5,12,31,78,208,551,1502,4117,11435,31926,
 89829,253727,719926,2048919,5848543,16732592,
 47973762,137788720,396393362,1141962118,
 3294080424,9512949813,27501182865,79579492065,
 230478715333]

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Last modified September 25 09:40 EDT 2021. Contains 347654 sequences. (Running on oeis4.)