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A037130 as a simple table

n a(n)
0 0
1 2
2 12
3 56
4 240
5 994
6 4032
7 16280
8 65280
9 261626
10 1047552
11 4192266
12 16773160
13 67100670
14 268419048
15 1073709056
16 4294901774
17 17179738108
18 68719214620
19 274877382642
20 1099510579208
21 4398044413950
22 17592181850104
23 70368735789062
24 281474959933418
25 1125899873288212

[0,2,12,56,240,994,4032,16280,65280,261626,
 1047552,4192266,16773160,67100670,268419048,
 1073709056,4294901774,17179738108,68719214620,
 274877382642,1099510579208,4398044413950,
 17592181850104,70368735789062,281474959933418,
 1125899873288212]

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Last modified October 19 18:19 EDT 2021. Contains 348091 sequences. (Running on oeis4.)