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A181527 as a simple table

n a(n)
0 1
1 4
2 13
3 38
4 103
5 264
6 649
7 1546
8 3595
9 8204
10 18445
11 40974
12 90127
13 196624
14 426001
15 917522
16 1966099
17 4194324
18 8912917
19 18874390
20 39845911
21 83886104
22 176160793
23 369098778
24 771751963
25 1610612764
26 3355443229
27 6979321886
28 14495514655
29 30064771104
30 62277025825

[1,4,13,38,103,264,649,1546,3595,8204,18445,40974,
 90127,196624,426001,917522,1966099,4194324,
 8912917,18874390,39845911,83886104,176160793,
 369098778,771751963,1610612764,3355443229,
 6979321886,14495514655,30064771104,62277025825]

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Last modified April 25 05:49 EDT 2024. Contains 371964 sequences. (Running on oeis4.)