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.

A218730 a(n) = (27^n - 1)/26.

Table of values

n a(n)
0 0
1 1
2 28
3 757
4 20440
5 551881
6 14900788
7 402321277
8 10862674480
9 293292210961
10 7918889695948
11 213810021790597
12 5772870588346120
13 155867505885345241
14 4208422658904321508
15 113627411790416680717
16 3067940118341250379360
17 82834383195213760242721
18 2236528346270771526553468

List of values

[0, 1, 28, 757, 20440, 551881, 14900788, 402321277, 10862674480, 293292210961, 7918889695948, 213810021790597, 5772870588346120, 155867505885345241, 4208422658904321508, 113627411790416680717, 3067940118341250379360, 82834383195213760242721, 2236528346270771526553468]

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

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