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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.

A384452 a(n) is the sum of squares of the unitary divisors of n!.

Table of values

n a(n)
1 1
2 5
3 50
4 650
5 16900
6 547924
7 27396200
8 1746641000
9 139773881000
10 13460683752200
11 1642203417768400
12 236441876606410000
13 40195119023089700000
14 7723888546922636420000
15 1735183690969722609168800
16 444206919394766468845892000
17 128820006624482275965308680000
18 41737604550102658693597600532800

List of values

[1, 5, 50, 650, 16900, 547924, 27396200, 1746641000, 139773881000, 13460683752200, 1642203417768400, 236441876606410000, 40195119023089700000, 7723888546922636420000, 1735183690969722609168800, 444206919394766468845892000, 128820006624482275965308680000, 41737604550102658693597600532800]

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

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