login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A142883 a(n) = A142590(n)/3. 2
0, 7, 5, 39, 4, 95, 33, 175, 14, 279, 85, 407, 30, 559, 161, 735, 52, 935, 261, 1159, 80, 1407, 385, 1679, 114, 1975, 533, 2295, 154, 2639, 705, 3007, 200, 3399, 901, 3815, 252, 4255, 1121, 4719, 310, 5207, 1365, 5719, 374, 6255, 1633, 6815, 444, 7399, 1925, 8007 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..51.

MAPLE

A061037 := proc(n) 1/4-1/n^2 ; numer(%) ; end: A142590 := proc(n) A061037(2+3*n) ; end:

A142883 := proc(n) A142590(n)/3 ; end: seq(A142883(n), n=0..120) ; # R. J. Mathar, Sep 07 2009

CROSSREFS

Sequence in context: A328758 A070426 A341431 * A146382 A163742 A202130

Adjacent sequences:  A142880 A142881 A142882 * A142884 A142885 A142886

KEYWORD

nonn,easy

AUTHOR

Paul Curtz, Sep 28 2008

EXTENSIONS

Edited and extended by R. J. Mathar, Sep 07 2009

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 28 13:32 EST 2021. Contains 349410 sequences. (Running on oeis4.)