A376949 Products of 5 distinct primes that are sandwiched between squarefree semiprime numbers.

5610, 6510, 6630, 7770, 9570, 10230, 12558, 13530, 14190, 14586, 14790, 15834, 16590, 16770, 17710, 19734, 20670, 21630, 22610, 22890, 23478, 23730, 24882, 25662, 26970, 28490, 28938, 29370, 31110, 31710, 33306, 33558, 33990, 34410, 34710, 35178, 35742, 36330, 37230, 37758, 38346, 39130, 40890

Offset: 1

Author

Massimo Kofler, Oct 10 2024

Keywords

• nonn

Comments

All terms are even.

Examples

			5610 is a term because 5610=2*3*5*11*17 is the product of five distinct primes and 5609=71*79, 5611=31*181 are semiprime numbers.
6510 is a term because 6510=2*3*5*7*31 is the product of five distinct primes and 6509=23*283, 6511=17*383 are semiprime numbers.
		

Crossrefs

Intersection of A046387 and 2*A350101.

Cf. A046387, A376380, A006881.

Programs

Mathematica

SequencePosition[Map[#[[;; , 2]] &, FactorInteger[Range[41000]]], {{1, 1}, {1, 1, 1, 1, 1}, {1, 1}}][[;; , 1]] + 1 (* Amiram Eldar, Oct 10 2024 *)