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A076374
Smallest solution to x+n*phi(x) = sigma(x) = x+n*A000010(x) = A000203(x).
0
2, 10, 6, 12, 9888, 90, 672, 37680, 3422877696, 159840, 35640, 2977920, 61724520, 9530611200, 272065167360, 613958400
OFFSET
1,1
COMMENTS
See comment to A076373.
a(17) > 10^12. a(18) > 10^12. a(19) = 353928960. - Donovan Johnson, Feb 29 2012
a(17) > 10^13. a(18) > 10^13. - Giovanni Resta, Apr 24 2016
EXAMPLE
n=3:solution set = {6,89152,..?}; n=7:solution-set = {672,146412,179864,..?}
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 15 2002
EXTENSIONS
a(8) corrected and a(9), a(12)-a(16) from Donovan Johnson, Feb 29 2012
STATUS
approved