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A086975 Numbers of the form p^2 * q * r with primes p < q < r. 1
60, 84, 132, 140, 156, 204, 220, 228, 260, 276, 308, 315, 340, 348, 364, 372, 380, 444, 460, 476, 492, 495, 516, 532, 564, 572, 580, 585, 620, 636, 644, 693, 708, 732, 740, 748, 765, 804, 812, 819, 820, 836, 852, 855, 860, 868, 876, 884, 940, 948, 988 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A001221(a(n))=3, A001222(a(n))=4;

A020639(a(n))^2 divides a(n);

subsequence of A086974 and of A085987.

LINKS

Table of n, a(n) for n=1..51.

CROSSREFS

Sequence in context: A138604 A291125 A337688 * A100659 A069976 A110546

Adjacent sequences:  A086972 A086973 A086974 * A086976 A086977 A086978

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Jul 25 2003

STATUS

approved

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Last modified July 23 17:41 EDT 2021. Contains 346259 sequences. (Running on oeis4.)