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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.

A349074 a(n) = U(3*n, n), where U(n, x) is the Chebyshev polynomial of the second kind.

Table of values

n a(n)
0 1
1 4
2 2911
3 7997214
4 57641556673
5 867583274883920
6 23630375698358890319
7 1056918444955456528983706
8 72383076947075470731692782081
9 7200266529428094485775774835670652
10 998383804974887102441600687728515247999
11 186701261436825568741051032736345268517903734

List of values

[1, 4, 2911, 7997214, 57641556673, 867583274883920, 23630375698358890319, 1056918444955456528983706, 72383076947075470731692782081, 7200266529428094485775774835670652, 998383804974887102441600687728515247999, 186701261436825568741051032736345268517903734]

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

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