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.

A183766 1/32 the number of (2n+1) X 4 binary arrays with equal numbers of 2 X 2 subblocks with sum mod two being 0 and 1.

Table of values

n a(n)
1 40
2 7392
3 1555840
4 346131968
5 79420170240
6 18585877094400
7 4409408507412480
8 1056689477487820800
9 255189244398549336064
10 62004700939478066266112
11 15140238779254079729172480
12 3712064235466595220724908032

List of values

[40, 7392, 1555840, 346131968, 79420170240, 18585877094400, 4409408507412480, 1056689477487820800, 255189244398549336064, 62004700939478066266112, 15140238779254079729172480, 3712064235466595220724908032]

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

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