The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A085024

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A085024

Duplicate of A085001.
(history; published version)

#2 by N. J. A. Sloane at Tue Jan 24 03:00:00 EST 2006

NAME

(3n+1)(3n+4).

Duplicate of A085001.

DATA

4, 28, 70, 130, 208, 304, 418, 550, 700, 868, 1054, 1258, 1480, 1720, 1978, 2254

COMMENTS

1 = 1/4 + Sum(n=1,inf.,9/a(n)); i.e. 1 = 1/4 + 9/28 + 9/70 + 9/130...with partial sums: 1/4, 4/7, 7/10, 10/13...(3n+1)/(3n+4). 1 = (3)Sum(n=0,inf.,1/a(n)): = 3/4 + 3/28 + 3/70 + 3/130...+...with partial sums: 3/4, 6/7, 9/10, 12/13...

EXAMPLE

4 = (1)(4), 28 = (4)(7), 70 = (7)(10), 130 = (10)(13)...

KEYWORD

nonn,new

dead

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 19 2003

#1 by N. J. A. Sloane at Sat Sep 13 03:00:00 EDT 2003

NAME

(3n+1)(3n+4).

DATA

4, 28, 70, 130, 208, 304, 418, 550, 700, 868, 1054, 1258

OFFSET

0,1

COMMENTS

EXAMPLE

4 = (1)(4), 28 = (4)(7), 70 = (7)(10), 130 = (10)(13)...

KEYWORD

nonn

AUTHOR

Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 19 2003

STATUS

approved