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A188228 as a simple table

n a(n)
1 1
2 2
3 4
4 15
5 58
6 245
7 1082
8 5020
9 24040
10 118154
11 592332
12 3019280
13 15604848
14 81614541
15 431227650
16 2298833499
17 12350952158
18 66818754504
19 363727676848
20 1990946917066
21 10952512200610
22 60525264890259
23 335856363303010
24 1870732844007387

[1,2,4,15,58,245,1082,5020,24040,118154,592332,
 3019280,15604848,81614541,431227650,2298833499,
 12350952158,66818754504,363727676848,
 1990946917066,10952512200610,60525264890259,
 335856363303010,1870732844007387]

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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)