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A304131 as a simple table

n a(n)
1 13
2 49
3 53
4 140
5 320
6 651
7 1321
8 2673
9 5293
10 10668
11 21704
12 43407
13 86685
14 174463
15 350613
16 704014
17 1416102
18 2846067
19 5718303
20 11503925
21 23146779
22 46553188
23 93651586
24 188449221
25 379193323
26 763054735
27 1535660833
28 3090522976
29 6219809542

[13,49,53,140,320,651,1321,2673,5293,10668,21704,
 43407,86685,174463,350613,704014,1416102,2846067,
 5718303,11503925,23146779,46553188,93651586,
 188449221,379193323,763054735,1535660833,
 3090522976,6219809542]

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Last modified December 8 03:48 EST 2022. Contains 358672 sequences. (Running on oeis4.)