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A163173 The n-th product of three primes divided by its central prime factor. 0
4, 6, 6, 10, 9, 14, 10, 14, 22, 15, 10, 26, 21, 22, 34, 14, 15, 38, 26, 46, 14, 33, 34, 21, 22, 38, 58, 39, 62, 25, 26, 46, 21, 74, 51, 22, 82, 33, 34, 57, 86, 58, 35, 26, 62, 94, 38, 39, 69, 106, 74, 46, 33, 118, 34, 22, 122, 35, 82, 51, 86, 87, 38, 134, 39, 55, 93, 94, 142, 57, 26 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

All entries are in A001358.

LINKS

Table of n, a(n) for n=1..71.

FORMULA

a(n) = A014612(n)/A162361(n).

EXAMPLE

a(1)=2*2*2/2=4. a(2)=2*2*3/2=6. a(3)=2*3*3/3=6. a(4)=2*2*5/2=10. a(5)=3*3*3/3 = 9.

CROSSREFS

Cf. A014612, A162361.

Sequence in context: A159475 A098350 A276269 * A058640 A075653 A075656

Adjacent sequences:  A163170 A163171 A163172 * A163174 A163175 A163176

KEYWORD

nonn

AUTHOR

Juri-Stepan Gerasimov, Jul 22 2009

EXTENSIONS

a(57) corrected by R. J. Mathar, Jul 25 2009

STATUS

approved

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Last modified October 23 23:51 EDT 2019. Contains 328379 sequences. (Running on oeis4.)