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.

A188245 Number of arrangements of n+2 nonzero numbers x(i) in -5..5 with the sum of x(i)*x(i+1) equal to zero.

Table of values

n a(n)
1 100
2 208
3 3292
4 16484
5 193232
6 1399640
7 14715004
8 123729664
9 1247614580
10 11199296500
11 110995324320
12 1029900778912
13 10129893228408
14 95800929304216
15 939159329686860
16 8989025842005012
17 88016972322771816
18 849227228527469216

List of values

[100, 208, 3292, 16484, 193232, 1399640, 14715004, 123729664, 1247614580, 11199296500, 110995324320, 1029900778912, 10129893228408, 95800929304216, 939159329686860, 8989025842005012, 88016972322771816, 849227228527469216]

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

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