cp's OEIS Frontend

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.

A275970 a(n) = 3*2^n + n - 1.

Table of values

n a(n)
0 2
1 6
2 13
3 26
4 51
5 100
6 197
7 390
8 775
9 1544
10 3081
11 6154
12 12299
13 24588
14 49165
15 98318
16 196623
17 393232
18 786449
19 1572882
20 3145747
21 6291476
22 12582933
23 25165846
24 50331671
25 100663320
26 201326617
27 402653210
28 805306395
29 1610612764
30 3221225501
31 6442450974
32 12884901919
33 25769803808
34 51539607585
35 103079215138
36 206158430243
37 412316860452
38 824633720869

List of values

[2, 6, 13, 26, 51, 100, 197, 390, 775, 1544, 3081, 6154, 12299, 24588, 49165, 98318, 196623, 393232, 786449, 1572882, 3145747, 6291476, 12582933, 25165846, 50331671, 100663320, 201326617, 402653210, 805306395, 1610612764, 3221225501, 6442450974, 12884901919, 25769803808, 51539607585, 103079215138, 206158430243, 412316860452, 824633720869]

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

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