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.

A186907 Number of (n+2)X3 0..6 arrays with each 3X3 subblock having rows and columns in lexicographically nondecreasing order.

Table of values

n a(n)
1 2066505
2 59969593
3 1276581035
4 22000126445
5 319741716426
6 4028133387613
7 44902749582723
8 449959668016830
9 4103914508092780
10 34409633745323847
11 267409041699567853
12 1939370255679423718
13 13202565796526137619

List of values

[2066505, 59969593, 1276581035, 22000126445, 319741716426, 4028133387613, 44902749582723, 449959668016830, 4103914508092780, 34409633745323847, 267409041699567853, 1939370255679423718, 13202565796526137619]

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

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