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A034174 a(n) is minimal such that prime factorizations of a(n)-n+1, ..., a(n) have same exponents. 3
1, 3, 35, 19943, 204327, 380480350, 440738966079 (list; graph; refs; listen; history; internal format)
OFFSET

1,2

COMMENTS

The final terms of the arithmetic progressions defined in A083785. - N. J. A. Sloane (njas(AT)research.att.com), Oct 18 2007

a(8) > 10^13. [From Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009]

LINKS

Index entries for sequences related to primes in arithmetic progressions

FORMULA

a(n) = A034173(n) + n - 1. [From Max Alekseyev (maxale(AT)gmail.com), Nov 10 2009]

EXAMPLE

a(4)=19943 because 19940, ..., 19943 all have the form p^2 q r.

CROSSREFS

Diagonal of A083785. Cf. A034173, A083785, A083787.

Sequence in context: A069954 A134098 A132513 * A119526 A112404 A189216

Adjacent sequences:  A034171 A034172 A034173 * A034175 A034176 A034177

KEYWORD

hard,nonn,more

AUTHOR

Dean Hickerson (dean.hickerson(AT)yahoo.com), Oct 01 1998

EXTENSIONS

a(7) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Oct 20 2009

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Last modified February 16 19:06 EST 2012. Contains 205945 sequences.