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.

A270471 Expansion of g.f. (1-3*x)/(1-7*x).

Table of values

n a(n)
0 1
1 4
2 28
3 196
4 1372
5 9604
6 67228
7 470596
8 3294172
9 23059204
10 161414428
11 1129900996
12 7909306972
13 55365148804
14 387556041628
15 2712892291396
16 18990246039772
17 132931722278404
18 930522055948828
19 6513654391641796
20 45595580741492572
21 319169065190448004
22 2234183456333136028

List of values

[1, 4, 28, 196, 1372, 9604, 67228, 470596, 3294172, 23059204, 161414428, 1129900996, 7909306972, 55365148804, 387556041628, 2712892291396, 18990246039772, 132931722278404, 930522055948828, 6513654391641796, 45595580741492572, 319169065190448004, 2234183456333136028]

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

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