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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.

A065552 a(n) = floor(sqrt(phi(10^n)*sigma(10^n) + 10^(3*n))).

Table of values

n a(n)
0 1
1 32
2 1004
3 31637
4 1000048
5 31622932
6 1000000496
7 31622778176
8 1000000004990
9 31622776617479
10 1000000000049975
11 31622776601841868
12 1000000000000499938
13 31622776601685374362
14 1000000000000004999847
15 31622776601683809131135
16 1000000000000000049999618
17 31622776601683793478102215

List of values

[1, 32, 1004, 31637, 1000048, 31622932, 1000000496, 31622778176, 1000000004990, 31622776617479, 1000000000049975, 31622776601841868, 1000000000000499938, 31622776601685374362, 1000000000000004999847, 31622776601683809131135, 1000000000000000049999618, 31622776601683793478102215]

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

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