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.

A301432 G.f.: Sum_{n>=0} 3^n * (1+x)^(n^2) / 4^(n+1).

Table of values

n a(n)
0 1
1 21
2 1512
3 182448
4 30845052
5 6706403424
6 1782361433664
7 559861341721920
8 202922346528231120
9 83358099246202940880
10 38271708686845732234752
11 19421327571536329073316864
12 10794249397953336851774993664
13 6521104275997643157262604783616
14 4254768377324045826054766465227264
15 2981719456871640091643441908508931072

List of values

[1, 21, 1512, 182448, 30845052, 6706403424, 1782361433664, 559861341721920, 202922346528231120, 83358099246202940880, 38271708686845732234752, 19421327571536329073316864, 10794249397953336851774993664, 6521104275997643157262604783616, 4254768377324045826054766465227264, 2981719456871640091643441908508931072]

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

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