A124942 n and n+5 are 5-almost primes.

675, 1323, 1372, 1480, 1750, 1875, 2295, 2920, 3100, 3856, 4095, 4120, 4180, 4275, 4375, 5175, 5427, 5643, 5775, 5980, 6370, 6375, 6520, 6723, 6820, 7150, 7155, 7203, 7240, 7245, 7960, 8325, 8883, 8920, 9075, 9207, 9555, 9620, 9625, 9747, 9855, 9940

Offset

1,1

Links

Charles R Greathouse IV, Table of n, a(n) for n = 1..10000

Example

675=3^3*5^2, 680=2^3*5*17; 1323=3^3*7^2, 1328=2^4*83.

Prog

(PARI) isok(n) = (bigomega(n) == 5) && (bigomega(n+5) == 5); \\ Michel Marcus, Oct 11 2013

Crossrefs

Cf. A124940, A124941.

Sequence in context: A267818 A158392 A264328 * A158393 A294949 A159208

Adjacent sequences: A124939 A124940 A124941 * A124943 A124944 A124945

Keyword

nonn

Author

Zak Seidov, Nov 13 2006

Status

approved