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.

A012853 Expansion of sec(x)^2+sech(x)^2 in powers of x^4.

Table of values

n a(n)
0 2
1 32
2 15872
3 44736512
4 419730685952
5 9902996106248192
6 493842960380415967232
7 46238368375619195682947072
8 7458815407441059142195019251712
9 1941965621570118224758799415904305152
10 775271967544166063656029248004350271291392
11 455362758259861772977200568672632329207841554432

List of values

[2, 32, 15872, 44736512, 419730685952, 9902996106248192, 493842960380415967232, 46238368375619195682947072, 7458815407441059142195019251712, 1941965621570118224758799415904305152, 775271967544166063656029248004350271291392, 455362758259861772977200568672632329207841554432]

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

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