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A277220 as a simple table

n a(n)
0 0
1 1
2 3
3 11
4 43
5 180
6 790
7 3590
8 16745
9 79705
10 385615
11 1890747
12 9375216
13 46931897
14 236873261
15 1204089630
16 6159064015
17 31678706490
18 163739008070
19 850051218980
20 4430529313065
21 23175017046351
22 121617754070653
23 640122809255716
24 3378402106118508
25 17875011275340275

[0,1,3,11,43,180,790,3590,16745,79705,385615,
 1890747,9375216,46931897,236873261,1204089630,
 6159064015,31678706490,163739008070,850051218980,
 4430529313065,23175017046351,121617754070653,
 640122809255716,3378402106118508,
 17875011275340275]

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Last modified August 15 09:07 EDT 2024. Contains 375173 sequences. (Running on oeis4.)