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A063465 Number k such that omega(k) = omega(k+3), where omega(k) is the number of distinct prime divisors of k. 1
2, 4, 5, 8, 12, 13, 15, 16, 18, 21, 29, 33, 35, 36, 45, 48, 51, 52, 54, 55, 61, 62, 64, 65, 69, 72, 74, 77, 82, 85, 88, 91, 92, 93, 95, 96, 102, 108, 112, 115, 116, 119, 125, 128, 133, 141, 142, 143, 144, 145, 152, 155, 158, 159, 161, 165, 172, 175, 184, 185, 189 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

PROG

(PARI) select(m->omega(m) == omega(m + 3), [1..350])

CROSSREFS

Sequence in context: A080588 A032850 A190190 * A287346 A344841 A035001

Adjacent sequences:  A063462 A063463 A063464 * A063466 A063467 A063468

KEYWORD

nonn

AUTHOR

Jason Earls, Jul 26 2001

STATUS

approved

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Last modified November 28 16:42 EST 2021. Contains 349413 sequences. (Running on oeis4.)