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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
OFFSET
1,1
LINKS
Seiichi Manyama, Table of n, a(n) for n = 1..30 (using A058073 data)
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jan 21 2021
EXTENSIONS
a(9)-a(23) from Seiichi Manyama using A058073 data, Jan 21 2021
STATUS
approved