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.

A215171 G.f.: exp( Sum_{n>=1} A002203(n)^4 * x^n/n ), where A002203 is the companion Pell numbers.

Table of values

n a(n)
0 1
1 16
2 776
3 23856
4 834596
5 28135056
6 957599096
7 32515276336
8 1104679254346
9 37525681919856
10 1274775209167896
11 43304782313176656
12 1471088177488196276
13 49973690736096892016
14 1697634414511896630376
15 57669596280038205388752
16 1959068639950002397935907

List of values

[1, 16, 776, 23856, 834596, 28135056, 957599096, 32515276336, 1104679254346, 37525681919856, 1274775209167896, 43304782313176656, 1471088177488196276, 49973690736096892016, 1697634414511896630376, 57669596280038205388752, 1959068639950002397935907]

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

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