A337915 Squarefree multiples of 15 such that a(n)+15 is also squarefree and all integers between are not squarefree.

36442589727570, 59068995605115, 70458333341415, 93553802716515, 99321073884915, 104575423448670, 225934088816670, 241427108122215, 245679971474670, 257496300981015, 263154806220570, 275458942061070, 312686748592170, 425667633054315, 448345051339515

Offset: 1

Author

Jud McCranie, Oct 06 2020

Keywords

• nonn

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.