A089219 Numbers of the form (p0^x)(p1^(x+1))(p2^(x+2))...(pk^(x+k)), where x and k are positive integers and p0,p1,...,pk are primes with p0<p1<...<pk.

18, 50, 75, 98, 108, 147, 242, 245, 338, 363, 500, 507, 578, 605, 648, 722, 845, 847, 867, 1058, 1083, 1125, 1183, 1372, 1445, 1587, 1682, 1805, 1859, 1922, 2023, 2250, 2523, 2527, 2645, 2738, 2883, 3087, 3179, 3362, 3698, 3703, 3757, 3888, 3971, 4107

Offset

1,1

Links

Table of n, a(n) for n=1..46.

Example

18 = (2^1)(3^2); here x=1, k=1, p0=2, p1=3.
2250 = (2^1)(3^2)(5^3); here x=1, k=2, p0=2, p1=3, p2=5.

Crossrefs

Sequence in context: A258211 A354929 A093617 * A102835 A095990 A102836

Adjacent sequences: A089216 A089217 A089218 * A089220 A089221 A089222

Keyword

easy,nonn

Author

Sam Alexander, Dec 10 2003

Extensions

More terms from Ray Chandler, Dec 20 2003

Status

approved