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A104173 a(n) is the smallest integer equal to the sum and the product of the same n positive integers: a(n)=i(1)+i(2)+...+i(n)=i(1)*i(2)*...*i(n). 2
1, 4, 6, 8, 8, 12, 12, 12, 15, 16, 16, 16, 18, 20, 24, 24, 24, 24, 24, 28, 27, 32, 30, 48, 32, 32, 32, 36, 36, 36, 42, 40, 40, 48, 48, 48, 45, 48, 48, 48, 48, 48, 54, 60, 54, 56, 54, 60, 63, 60, 60, 60, 63, 64, 64, 64, 64, 64, 70, 72, 72, 72, 72, 72, 72, 84, 80, 80, 81, 80, 80 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

David Radcliffe, Table of n, a(n) for n = 1..10000

Project Euler, Problem 88: Product-sum numbers

EXAMPLE

a(6)=12 because 6+2+1+1+1+1=6*2*1*1*1*1=12 is the smallest integer which is the sum and product of the same 6 positive integers.

CROSSREFS

Sequence in context: A079775 A247654 A262767 * A023991 A183005 A103189

Adjacent sequences:  A104170 A104171 A104172 * A104174 A104175 A104176

KEYWORD

easy,nonn

AUTHOR

Louis Marmet (louis(AT)marmet.org), Mar 10 2005

STATUS

approved

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Last modified March 23 21:31 EDT 2017. Contains 283985 sequences.