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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.

A271440 a(n) = sigma(prime(n)^n) - phi(prime(n)^n).

Table of values

n a(n)
1 2
2 7
3 56
4 743
5 30746
6 773527
7 49783736
8 1837403019
9 160181560802
10 29532404308019
11 1666577516860962
12 360777399719461393
13 45691067858241526814
14 3477439299142731351087
15 518913689466371066697746
16 147680787468230866751370317
17 43490064769447225534580532962

List of values

[2, 7, 56, 743, 30746, 773527, 49783736, 1837403019, 160181560802, 29532404308019, 1666577516860962, 360777399719461393, 45691067858241526814, 3477439299142731351087, 518913689466371066697746, 147680787468230866751370317, 43490064769447225534580532962]

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

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