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A328737 Numbers k such that at least one of sopfr(k-1) and sopfr(k+1) is greater than or equal to 3*sopfr(k). 2
30, 32, 36, 40, 42, 48, 52, 54, 60, 66, 68, 70, 72, 75, 78, 80, 81, 84, 88, 90, 96, 98, 100, 102, 104, 105, 108, 110, 112, 114, 117, 126, 128, 130, 132, 135, 136, 138, 140, 143, 147, 148, 150, 152, 156, 160, 162, 164, 165, 168, 172, 174, 176, 180 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
k-1 or k+1 or both have sums of prime factors at least 3 times the sum of prime factors of k.
LINKS
CROSSREFS
Sequence in context: A133266 A337934 A335148 * A370127 A118616 A181456
KEYWORD
nonn
AUTHOR
Robert Bilinski, Oct 26 2019
STATUS
approved

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Last modified July 22 12:58 EDT 2024. Contains 374499 sequences. (Running on oeis4.)