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A078057 as a simple table

n a(n)
0 1
1 3
2 7
3 17
4 41
5 99
6 239
7 577
8 1393
9 3363
10 8119
11 19601
12 47321
13 114243
14 275807
15 665857
16 1607521
17 3880899
18 9369319
19 22619537
20 54608393
21 131836323
22 318281039
23 768398401
24 1855077841
25 4478554083
26 10812186007
27 26102926097
28 63018038201
29 152139002499
30 367296043199
31 886731088897

[1,3,7,17,41,99,239,577,1393,3363,8119,19601,
 47321,114243,275807,665857,1607521,3880899,
 9369319,22619537,54608393,131836323,318281039,
 768398401,1855077841,4478554083,10812186007,
 26102926097,63018038201,152139002499,367296043199,
 886731088897]

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Last modified November 20 12:37 EST 2018. Contains 317402 sequences. (Running on oeis4.)