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A208131 as a simple table

n a(n)
0 1
1 3
2 6
3 12
4 36
5 72
6 144
7 432
8 864
9 1728
10 5184
11 10368
12 20736
13 62208
14 124416
15 248832
16 746496
17 1492992
18 2985984
19 8957952
20 17915904
21 35831808
22 107495424
23 214990848
24 429981696
25 1289945088
26 2579890176
27 5159780352
28 15479341056
29 30958682112
30 61917364224

[1,3,6,12,36,72,144,432,864,1728,5184,10368,20736,
 62208,124416,248832,746496,1492992,2985984,
 8957952,17915904,35831808,107495424,214990848,
 429981696,1289945088,2579890176,5159780352,
 15479341056,30958682112,61917364224]

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Last modified September 21 11:18 EDT 2019. Contains 327253 sequences. (Running on oeis4.)