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A337915 Squarefree multiples of 15 such that a(n)+15 is also squarefree and all integers between are not squarefree. 4
36442589727570, 59068995605115, 70458333341415, 93553802716515, 99321073884915, 104575423448670, 225934088816670, 241427108122215, 245679971474670, 257496300981015, 263154806220570, 275458942061070, 312686748592170, 425667633054315, 448345051339515 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

The terms are congruent to 15 or 870 mod 900 (900=2^2*3^2*5^2). The term a(1) is A109505(15) and A109473(10).

LINKS

Jud McCranie, Table of n, a(n) for n = 1..59

CROSSREFS

Cf. A337914.

Sequence in context: A229069 A122126 A318575 * A211112 A132389 A186913

Adjacent sequences: A337912 A337913 A337914 * A337916 A337917 A337918

KEYWORD

nonn

AUTHOR

Jud McCranie, Oct 06 2020

STATUS

approved

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Last modified February 1 05:06 EST 2023. Contains 359981 sequences. (Running on oeis4.)