The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A068586 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A068586

Duplicate of A068585.
(history; published version)

#4 by N. J. A. Sloane at Fri May 11 03:00:00 EDT 2007

NAME

Same as Duplicate of A068585.

#3 by N. J. A. Sloane at Wed Sep 22 03:00:00 EDT 2004

NAME

Numbers n such that the denominators of sum(k=1,n,1/k)^3 equals the denominators of sum(k=1,n,1/k^3).

Same as A068585.

DATA

1, 2, 3, 4, 5, 9, 10, 11, 12, 13, 14, 15, 16, 17, 27, 28, 29, 30, 31, 32, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 289, 290, 291, 292, 293, 1004, 1005, 1006, 1007, 1008, 1009, 1010, 1011, 1012, 1013

FORMULA

n such that A002805(n)^3=A007409(n)

KEYWORD

easy,frac,nonn,new

dead

AUTHOR

Benoit Cloitre (abcloitre(AT)wanadoo.fr), Mar 27 2002

#2 by N. J. A. Sloane at Sat Jun 12 03:00:00 EDT 2004

NAME

Numbers n such that the denominators of sum(k=1,n,1/k)^3 equals the denominators of sum(k=1,n,1/k^3).

KEYWORD

easy,frac,nonn,new

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

NAME

n such that the denominators of sum(k=1,n,1/k)^3 equals the denominators of sum(k=1,n,1/k^3).

DATA

OFFSET

1,2

FORMULA

n such that A002805(n)^3=A007409(n)

KEYWORD

easy,frac,nonn

AUTHOR

Benoit Cloitre (abcloitre(AT)wanadoo.fr), Mar 27 2002

STATUS

approved