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A122145 Numbers n such that q(n) < M(n) where q(n) is the largest prime divisor of n and M(n) is the largest prime power divisor of n. 6
4, 8, 9, 12, 16, 18, 24, 25, 27, 32, 36, 40, 45, 48, 49, 50, 54, 56, 63, 64, 72, 75, 80, 81, 90, 96, 98, 100, 108, 112, 120, 121, 125, 126, 128, 135, 144, 147, 150, 160, 162, 168, 169, 175, 176, 180, 189, 192, 196, 200, 208, 216, 224, 225, 240, 242, 243, 245, 250 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

PROG

(PARI) is(n)=my(f=factor(n), k=#f[, 1]); for(i=1, k, if(f[i, 1]^f[i, 2]>f[k, 1], return(1))); 0 \\ Charles R Greathouse IV, Sep 20 2012

CROSSREFS

Cf. A006530, A034699, A122144, A122146.

Sequence in context: A053443 A048098 A322109 * A328014 A034030 A057109

Adjacent sequences:  A122142 A122143 A122144 * A122146 A122147 A122148

KEYWORD

nonn

AUTHOR

Douglas Stones (dssto1(AT)student.monash.edu.au), Aug 22 2006

EXTENSIONS

Extended by Ray Chandler, Aug 23 2006

STATUS

approved

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Last modified June 24 18:46 EDT 2021. Contains 345419 sequences. (Running on oeis4.)