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A245390 as a simple table

n a(n)
1 1
2 1
3 3
4 11
5 39
6 145
7 514
8 1901
9 6741
10 24880
11 87791
12 325634
13 1152725
14 4251234
15 15052387
16 55750323
17 197031808
18 729360141
19 2579285955
20 9539017676
21 33822222227
22 124889799518
23 440743675148
24 1635528366655
25 5790967247863
26 21360573026444
27 75643815954959
28 280096917425535

[1,1,3,11,39,145,514,1901,6741,24880,87791,325634,
 1152725,4251234,15052387,55750323,197031808,
 729360141,2579285955,9539017676,33822222227,
 124889799518,440743675148,1635528366655,
 5790967247863,21360573026444,75643815954959,
 280096917425535]

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Last modified August 4 06:52 EDT 2020. Contains 336201 sequences. (Running on oeis4.)