A131801 Increment each prime factor for each term of the least prime sequence A087443.

1, 3, 9, 15, 27, 45, 105, 81, 135, 225, 315, 1155, 243, 405, 675, 945, 1575, 3465, 15015, 729, 1215, 2025, 3375, 2835, 4725, 10395, 11025, 17325, 45045, 255255, 2187, 3645, 6075, 10125, 8505, 14175, 23625, 31185, 33075, 51975, 121275, 135135, 225225

Offset

0,2

Links

Table of n, a(n) for n=0..42.

Formula

T(n,k) = A003961[A087443(n,k)]. - R. J. Mathar, Aug 01 2007

Example

The term 30 = 2*3*5
becomes 105 = 3*5*7
A087443 begins
1
2
4...6
8...12...30
16
etc
so a(n) begins
1
3
9...15
27..45..105
81
etc

Crossrefs

Cf. A025487.

Cf. A131822.

Sequence in context: A372509 A233819 A131822 * A280963 A122819 A056287

Adjacent sequences: A131798 A131799 A131800 * A131802 A131803 A131804

Keyword

easy,tabf,nonn

Author

Alford Arnold, Jul 16 2007

Extensions

More terms from R. J. Mathar, Aug 01 2007

Status

approved