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.

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A248084 Subsequence of lesser of 3 terms of A095301 that are 2 apart.

Original entry on oeis.org

12400, 151396, 503800, 831400, 1050028, 1134196, 1461796, 1486600, 1637296, 1762288, 1814200, 1987468, 2424940, 2444596, 2449744, 3237388, 3427396, 3452200, 3779800, 4082596, 4574608, 4799788, 4862284, 4887088, 5065396, 5674732, 5745400, 6048196, 6375796
Offset: 1

Views

Author

Michel Marcus, Oct 01 2014

Keywords

Comments

A095301 lists integers that have a smaller friend, that is, there exists a smaller integer with same abundancy, sigma(x)/x. In A095301 there are some groups of 3 terms with a common difference of 2, motivating this sequence.
A search, up to 10^9, for similar groups of 4 terms provided no such instance.
84346341351244 and 2652126430251504 belong to the group stated above. - Hiroaki Yamanouchi, Oct 16 2014
This sequence lists the terms A248083(n) such that A248083(n+1)=A248083(n)+2. - M. F. Hasler, Oct 03 2014

Examples

			12400 is in the sequence because 12400, 12402 and 12404, with a difference of 2 between each, are in A095301, with smaller friends: 150, 636 and 2658. As a result of this, both 12400 and 12402 can be found in A248083.

Crossrefs

Cf. A095301, A248083 (similar, with only 2 consecutive terms).
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