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A079774 Consider the triangle shown below in which the n-th row contains the n smallest terms in increasing order having a common factor > 1, the first term being the n-th composite number; sequence gives the last term of each row. 2
4, 8, 12, 18, 18, 22, 26, 36, 32, 36, 40, 54, 46, 50, 95, 56, 75, 62, 66, 70, 93, 76, 145, 82, 86, 114, 92, 96, 100, 132, 106, 110, 273, 116, 153, 122, 126, 240, 132, 174, 138, 142, 146, 192, 152, 290, 158, 162, 213, 168, 172, 176, 231, 182, 455, 188, 192, 252 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

4

6 8

8 10 12

9 12 15 18

10 12 14 16 18

12 14 16 18 20 22

...

LINKS

Table of n, a(n) for n=1..58.

CROSSREFS

Cf. A079775, A079776.

Sequence in context: A098573 A092753 A276338 * A311555 A311556 A311557

Adjacent sequences:  A079771 A079772 A079773 * A079775 A079776 A079777

KEYWORD

nonn

AUTHOR

Amarnath Murthy, Jan 31 2003

EXTENSIONS

Corrected and extended by Frank Ellermann, Jul 11 2003

STATUS

approved

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Last modified June 19 15:58 EDT 2021. Contains 345144 sequences. (Running on oeis4.)