A121971 a(n) is the smallest number such that pi(n) divides n a record-breaking prime number of times.

2, 27, 330, 3059, 175197, 1304498, 70115412, 514272411, 27788566029, 11091501630949, 81744303089590, 32781729631790293, 1784546064357412171, 13169525310647352914, 717466145742128063267

Offset

1,1

Links

Table of n, a(n) for n=1..15.

Formula

a(n) = A038625(A000040(n)). - Ridouane Oudra, Aug 11 2019

Example

a(3)=330 because pi(330)=66 and 330 divided by 66 is 5, the first prime greater than the prime quotient in a(2) which was 3.

Crossrefs

Cf. A000720, A000040, A038625.

Sequence in context: A199021 A091709 A083384 * A377581 A278790 A277832

Adjacent sequences: A121968 A121969 A121970 * A121972 A121973 A121974

Keyword

more,nonn

Author

G. L. Honaker, Jr., Sep 04 2006

Extensions

a(10)-a(11) from Donovan Johnson, Dec 02 2009

a(12)-a(15) from Ridouane Oudra, Aug 11 2019

Status

approved