Voozh

A358541

a(n) is the smallest number with exactly n divisors that are centered n-gonal numbers.

20, 325, 912, 43771, 234784, 11025, 680680, 9143308361, 2470852896

OFFSET

3,1

COMMENTS

Any subsequent terms are > 10^10. - Lucas A. Brown, Dec 24 2022

LINKS

Lucas A. Brown, Python program.

Eric Weisstein's World of Mathematics, Centered Polygonal Number

EXAMPLE

a(5) = 912 because 912 has 5 centered pentagonal divisors {1, 6, 16, 76, 456} and this is the smallest such number.

CROSSREFS

KEYWORD

nonn,more

AUTHOR

EXTENSIONS

a(10)-a(11) from Martin Ehrenstein, Dec 04 2022

STATUS

approved

URL: https://oeis.org/A358541