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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.

A016145 Expansion of g.f. 1/((1-3*x)*(1-10*x)).

Table of values

n a(n)
0 1
1 13
2 139
3 1417
4 14251
5 142753
6 1428259
7 14284777
8 142854331
9 1428562993
10 14285688979
11 142857066937
12 1428571200811
13 14285713602433
14 142857140807299
15 1428571422421897
16 14285714267265691
17 142857142801797073
18 1428571428405391219
19 14285714285216173657
20 142857142855648520971

List of values

[1, 13, 139, 1417, 14251, 142753, 1428259, 14284777, 142854331, 1428562993, 14285688979, 142857066937, 1428571200811, 14285713602433, 142857140807299, 1428571422421897, 14285714267265691, 142857142801797073, 1428571428405391219, 14285714285216173657, 142857142855648520971]

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

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