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A131801 Increment each prime factor for each term of the least prime sequence A087443. 2
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
LINKS
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: A147516 A233819 A131822 * A280963 A122819 A056287
KEYWORD
easy,tabf,nonn
AUTHOR
Alford Arnold, Jul 16 2007
EXTENSIONS
More terms from R. J. Mathar, Aug 01 2007
STATUS
approved

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Last modified March 19 03:33 EDT 2024. Contains 370952 sequences. (Running on oeis4.)