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A038739 as a simple table

n a(n)
2 1
3 7
4 30
5 103
6 314
7 895
8 2455
9 6590
10 17480
11 46070
12 121016
13 317342
14 831465
15 2177613
16 5702054
17 14929365
18 39087010
19 102332805
20 267912735
21 701406940
22 1836309856
23 4807524652
24 12586266400
25 32951277148
26 86267567969
27 225851430035

[1,7,30,103,314,895,2455,6590,17480,46070,121016,
 317342,831465,2177613,5702054,14929365,39087010,
 102332805,267912735,701406940,1836309856,
 4807524652,12586266400,32951277148,86267567969,
 225851430035]

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Last modified April 18 22:08 EDT 2019. Contains 322237 sequences. (Running on oeis4.)