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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A304517 a(n) = 16*2^n - 11 (n>=1).

Table of values

n a(n)
1 21
2 53
3 117
4 245
5 501
6 1013
7 2037
8 4085
9 8181
10 16373
11 32757
12 65525
13 131061
14 262133
15 524277
16 1048565
17 2097141
18 4194293
19 8388597
20 16777205
21 33554421
22 67108853
23 134217717
24 268435445
25 536870901
26 1073741813
27 2147483637
28 4294967285
29 8589934581
30 17179869173
31 34359738357
32 68719476725
33 137438953461
34 274877906933
35 549755813877

List of values

[21, 53, 117, 245, 501, 1013, 2037, 4085, 8181, 16373, 32757, 65525, 131061, 262133, 524277, 1048565, 2097141, 4194293, 8388597, 16777205, 33554421, 67108853, 134217717, 268435445, 536870901, 1073741813, 2147483637, 4294967285, 8589934581, 17179869173, 34359738357, 68719476725, 137438953461, 274877906933, 549755813877]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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