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A340582 Numbers k such that sigma(k) = 4 * sigma(k+1). 1
25908120, 136616760, 171430560, 196876680, 354049920, 405601560, 514374840, 825473880, 1204476000, 2223650520, 2510539920, 3003191100, 4017339480, 4574146500, 6129062940, 6797728800, 7311296520, 9779952000, 12472435080, 13103164800, 19989450000, 22180840920, 22710872520 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Seiichi Manyama, Table of n, a(n) for n = 1..30 (using A058073 data)

CROSSREFS

Cf. A002961, A080372, A163193, A217791, A340713, A340720.

Sequence in context: A206317 A184563 A231120 * A234358 A113026 A186143

Adjacent sequences:  A340579 A340580 A340581 * A340583 A340584 A340585

KEYWORD

nonn

AUTHOR

Seiichi Manyama, Jan 21 2021

EXTENSIONS

a(9)-a(23) from Seiichi Manyama using A058073 data, Jan 21 2021

STATUS

approved

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Last modified May 19 04:20 EDT 2022. Contains 353826 sequences. (Running on oeis4.)