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A007002 as a simple table

n a(n)
1 1
2 1
3 3
4 6
5 16
6 46
7 126
8 448
9 1366
10 5356
11 18568
12 76296
13 297012
14 1264264
15 5412928
16 23928024
17 110468806
18 509578384
19 2495966844
20 12051904744
21 61878848596
22 312943394336
23 1670571625528
24 8836179426416
25 48794206157176
26 269194017597376
27 1533137311902576

[1,1,3,6,16,46,126,448,1366,5356,18568,76296,
 297012,1264264,5412928,23928024,110468806,
 509578384,2495966844,12051904744,61878848596,
 312943394336,1670571625528,8836179426416,
 48794206157176,269194017597376,1533137311902576]

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)