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A259639 as a simple table

n a(n)
1 236
2 813
3 3849
4 12348
5 44500
6 182654
7 670088
8 2436036
9 9361060
10 35240824
11 130549550
12 491638762
13 1851623400
14 6921303290
15 25956767494
16 97538420980
17 365652086782
18 1370955967484
19 5145436930220
20 19301728914022
21 72388123438246

[236,813,3849,12348,44500,182654,670088,2436036,
 9361060,35240824,130549550,491638762,1851623400,
 6921303290,25956767494,97538420980,365652086782,
 1370955967484,5145436930220,19301728914022,
 72388123438246]

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Last modified October 20 10:43 EDT 2021. Contains 348100 sequences. (Running on oeis4.)