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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.

A349070 a(n) = T(3*n, n), where T(n, x) is the Chebyshev polynomial of the first kind.

Table of values

n a(n)
0 1
1 1
2 1351
3 3880899
4 28355806081
5 429364731169925
6 11731978174095849671
7 525735133485219615486151
8 36049049892983023583045990401
9 3588952618789973294871796462342089
10 497937643558017209960022199517744044999
11 93156956377055671178035977181412016527566091

List of values

[1, 1, 1351, 3880899, 28355806081, 429364731169925, 11731978174095849671, 525735133485219615486151, 36049049892983023583045990401, 3588952618789973294871796462342089, 497937643558017209960022199517744044999, 93156956377055671178035977181412016527566091]

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

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