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A359015
a(n) is the index of the smallest n-gonal pyramidal number with exactly n distinct prime factors.
1
7, 17, 84, 115, 220, 468, 3058, 5719, 18290, 182104, 144738, 1984619, 12051935
(list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
Table of n, a(n) for n=3..15.
Eric Weisstein's World of Mathematics, Distinct Prime Factors
Eric Weisstein's World of Mathematics, Pyramidal Number
CROSSREFS
Cf. A358864, A359016.
Sequence in context: A122528 A123206 A035078 * A177123 A124165 A239150
Adjacent sequences: A359012 A359013 A359014 * A359016 A359017 A359018
KEYWORD
nonn,more,changed
AUTHOR
Ilya Gutkovskiy, Dec 12 2022
STATUS
approved

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Last modified February 17 19:56 EST 2025. Contains 380975 sequences.
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