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.

A272525 Convolution of nonzero repunits (A002275) with themselves.

Table of values

n a(n)
0 1
1 22
2 343
3 4664
4 58985
5 713306
6 8367627
7 96021948
8 1083676269
9 12071330590
10 133058984911
11 1454046639232
12 15775034293553
13 170096021947874
14 1824417009602195
15 19478737997256516
16 207133058984910837
17 2194787379972565158
18 23182441700960219479
19 244170096021947873800

List of values

[1, 22, 343, 4664, 58985, 713306, 8367627, 96021948, 1083676269, 12071330590, 133058984911, 1454046639232, 15775034293553, 170096021947874, 1824417009602195, 19478737997256516, 207133058984910837, 2194787379972565158, 23182441700960219479, 244170096021947873800]

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

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