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A026550 as a simple table

n a(n)
0 1
1 2
2 6
3 13
4 35
5 77
6 204
7 453
8 1199
9 2675
10 7089
11 15855
12 42070
13 94228
14 250269
15 561068
16 1491262
17 3345334
18 8896310
19 19966310
20 53118352
21 119257668
22 317373194
23 712742108
24 1897253203
25 4261711183
26 11346582851
27 25491926511
28 67882263130

[1,2,6,13,35,77,204,453,1199,2675,7089,15855,
 42070,94228,250269,561068,1491262,3345334,8896310,
 19966310,53118352,119257668,317373194,712742108,
 1897253203,4261711183,11346582851,25491926511,
 67882263130]

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)