The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A016097

(Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
Showing all changes.

A016097

Erroneous version of A063507.
(history; published version)

#5 by N. J. A. Sloane at Fri Jan 09 03:00:00 EST 2009

NAME

Least k such that k - phi(k) = n or 0 if impossible.

Erroneous version of A063507.

DATA

1, 4, 9, 6, 25, 10, 15, 12, 21, 0, 35, 18, 33, 26, 39, 24, 65, 34, 51, 38, 45, 30, 95, 36, 69, 0, 63, 52, 161, 42, 87, 48, 93, 0, 75, 54, 217, 74, 99, 76, 185, 82, 123, 60, 117, 66, 215, 72, 141, 0, 235, 0, 329, 78, 159, 98, 105, 0, 371, 84, 177, 122, 135, 96

MATHEMATICA

a = Table[0, {70}]; Do[b = n - EulerPhi[n]; If[b < 70 && a[[b + 1]] == 0, a[[b + 1]] = n], {n, 1, 10^4}]; a

KEYWORD

nonn,new

dead

AUTHOR

Robert G. Wilson v (rgwv(AT)rgwv.com)

#4 by N. J. A. Sloane at Fri May 16 03:00:00 EDT 2003

MATHEMATICA

a = Table[0, {70}]; Do[b = n - EulerPhi[n]; If[b < 70 && a[[b + 1]] == 0, a[[b + 1]] = n], {n, 1, 10^4}]; a

KEYWORD

nonn,new

nonn

AUTHOR

Robert G. Wilson v (rgwv@kspaint(AT)rgwv.com)

#3 by N. J. A. Sloane at Thu Jun 15 03:00:00 EDT 2000

KEYWORD

nonn,new

nonn

AUTHOR

"Robert G. Wilson v" ([email protected])

#2 by N. J. A. Sloane at Mon May 08 03:00:00 EDT 2000

KEYWORD

nonn,new

nonn

AUTHOR

"Robert G. Wilson v" (rgwv@southwindkspaint.netcom)

#1 by N. J. A. Sloane at Sat Dec 11 03:00:00 EST 1999

NAME

Least k such that k - phi(k) = n or 0 if impossible.

DATA

OFFSET

1,2

KEYWORD

nonn

AUTHOR

"Robert G. Wilson v" ([email protected])

STATUS

approved