A076374 Smallest solution to x+n*phi(x) = sigma(x) = x+n*A000010(x) = A000203(x).

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

Links

Table of n, a(n) for n=1..16.

Example

n=3:solution set = {6,89152,..?}; n=7:solution-set = {672,146412,179864,..?}

Crossrefs

Cf. A000010, A000203, A076373.

Sequence in context: A095845 A105801 A086064 * A142954 A082225 A211365

Adjacent sequences: A076371 A076372 A076373 * A076375 A076376 A076377

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