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.

A246036 Expansion of (1+4*x)/((1+2*x)*(1-4*x)).

Table of values

n a(n)
0 1
1 6
2 20
3 88
4 336
5 1376
6 5440
7 21888
8 87296
9 349696
10 1397760
11 5593088
12 22368256
13 89481216
14 357908480
15 1431666688
16 5726601216
17 22906535936
18 91625881600
19 366504050688
20 1466015154176
21 5864062713856
22 23456246661120
23 93824995033088
24 375299963355136
25 1501199886974976
26 6004799480791040
27 24019198057381888

List of values

[1, 6, 20, 88, 336, 1376, 5440, 21888, 87296, 349696, 1397760, 5593088, 22368256, 89481216, 357908480, 1431666688, 5726601216, 22906535936, 91625881600, 366504050688, 1466015154176, 5864062713856, 23456246661120, 93824995033088, 375299963355136, 1501199886974976, 6004799480791040, 24019198057381888]

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

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