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A094803 as a simple table

n a(n)
1 1
2 3
3 9
4 28
5 90
6 296
7 988
8 3328
9 11272
10 38304
11 130416
12 444544
13 1516320
14 5174144
15 17659840
16 60282880
17 205795456
18 702583296
19 2398676736
20 8189409280
21 27960021504
22 95460743168
23 325921881088
24 1112763940864
25 3799207806976
26 12971294957568
27 44286747439104
28 151204366286848

[1,3,9,28,90,296,988,3328,11272,38304,130416,
 444544,1516320,5174144,17659840,60282880,
 205795456,702583296,2398676736,8189409280,
 27960021504,95460743168,325921881088,
 1112763940864,3799207806976,12971294957568,
 44286747439104,151204366286848]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)