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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.

A254363 a(n) = 4^n + 6*2^n + 3^(n+1) + 10.

Table of values

n a(n)
0 20
1 35
2 77
3 203
4 605
5 1955
6 6677
7 23723
8 86765
9 324275
10 1231877
11 4738043
12 18396125
13 71940995
14 282882677
15 1116985163
16 4424500685
17 17568076115
18 69883311077
19 278367837083
20 1109978272445
21 4429440153635
22 17686354389077
23 70651224045803
24 282322365983405
25 1128441973997555
26 4511225627508677
27 18037276107243323
28 72126226025905565

List of values

[20, 35, 77, 203, 605, 1955, 6677, 23723, 86765, 324275, 1231877, 4738043, 18396125, 71940995, 282882677, 1116985163, 4424500685, 17568076115, 69883311077, 278367837083, 1109978272445, 4429440153635, 17686354389077, 70651224045803, 282322365983405, 1128441973997555, 4511225627508677, 18037276107243323, 72126226025905565]

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

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