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.

A197990 Number of binary arrangements of total n 1's, without adjacent 1's on n X n torus connected n-s.

Table of values

n a(n)
0 1
1 1
2 4
3 27
4 664
5 19375
6 712536
7 31474709
8 1623421808
9 95752130751
10 6356272757680
11 468976366239799
12 38071162011854412
13 3372179632719015287
14 323631920261745650114
15 33452466695808298399785
16 3705187274710433648959456
17 437779689881887196512539391

List of values

[1, 1, 4, 27, 664, 19375, 712536, 31474709, 1623421808, 95752130751, 6356272757680, 468976366239799, 38071162011854412, 3372179632719015287, 323631920261745650114, 33452466695808298399785, 3705187274710433648959456, 437779689881887196512539391]

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

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