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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.

A301420 Sums of positive coefficients in generalized Chebyshev polynomials of the first kind, for a family of 5 data.

Table of values

n a(n)
1 1
2 5
3 31
4 205
5 1376
6 9251
7 62210
8 418361
9 2813485
10 18920751
11 127242501
12 855708865
13 5754662616
14 38700243965
15 260260067876
16 1750255192001
17 11770508100345
18 79156948982921
19 532332378421395
20 3579947998967501
21 24075236064574376

List of values

[1, 5, 31, 205, 1376, 9251, 62210, 418361, 2813485, 18920751, 127242501, 855708865, 5754662616, 38700243965, 260260067876, 1750255192001, 11770508100345, 79156948982921, 532332378421395, 3579947998967501, 24075236064574376]

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

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