A384507 Initial term of first run of exactly n consecutive numbers with exactly 5 distinct prime factors.

2310, 254540, 1042404, 21871365, 129963314, 830692265, 4617927894, 18297409143, 41268813542, 287980277114, 1182325618032, 6455097761454, 14207465691240, 54049709480208, 90987640183352, 1164838922284960, 546525829796442

Offset

1,1

Comments

See A087978 for further details and an explanation of why this sequence is finite.

First differs from A087978 at n=16.

a(18) > 2 * 10^15.

Links

Table of n, a(n) for n=1..17.

Example

a(16) > a(17) because the first run of 16 consecutive integers i with A001221(i)=5 is not a maximal run.

Crossrefs

Cf. A001221, A046387, A080569, A087977, A087978, A185032, A185042.

Sequence in context: A046403 A288072 A087978 * A261210 A020435 A288798

Adjacent sequences: A384504 A384505 A384506 * A384508 A384509 A384510

Keyword

nonn,fini

Author

Toshitaka Suzuki, Jun 23 2025

Status

approved