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A135440 as a simple table

n a(n)
0 -1
1 4
2 2
3 10
4 14
5 34
6 62
7 130
8 254
9 514
10 1022
11 2050
12 4094
13 8194
14 16382
15 32770
16 65534
17 131074
18 262142
19 524290
20 1048574
21 2097154
22 4194302
23 8388610
24 16777214
25 33554434
26 67108862
27 134217730
28 268435454
29 536870914
30 1073741822
31 2147483650
32 4294967294
33 8589934594
34 17179869182
35 34359738370

[-1,4,2,10,14,34,62,130,254,514,1022,2050,4094,
 8194,16382,32770,65534,131074,262142,524290,
 1048574,2097154,4194302,8388610,16777214,33554434,
 67108862,134217730,268435454,536870914,1073741822,
 2147483650,4294967294,8589934594,17179869182,
 34359738370]

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Last modified June 29 06:36 EDT 2024. Contains 373826 sequences. (Running on oeis4.)