login
This site is supported by donations to The OEIS Foundation.

 

Logo

Thanks to everyone who made a donation during our annual appeal!
To see the list of donors, or make a donation, see the OEIS Foundation home page.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A035489 Main diagonal of the Stolarsky array. 2
1, 6, 18, 39, 81, 157, 309, 576, 1042, 1885, 3338, 6011, 10569, 18321, 31851, 55717, 95320, 163580, 278208, 478807, 814329, 1374926, 2328359, 3963782, 6656320, 11209356, 18772741, 31524784, 53186481, 88750072, 148471480, 247281057 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

COMMENTS

General solution for the Stolarsky array by row, column is given by the GP-PARI program. Solution for the main diagonal in A035489 is found by setting r=c. If computing large terms for the Stolarsky array, increase the default precision of GP-PARI to accommodate the size. - Randall L. Rathbun (randallr(AT)abac.com), Jan 25 2002

LINKS

Table of n, a(n) for n=0..31.

N. J. A. Sloane, Classic Sequences

PROG

(PARI) {Stolarsky(r, c)= tau=(1+sqrt(5))/2; a=floor(r*(1+tau)-tau/2); b=round(a*tau); if(c==1, a, if(c==2, b, for(i=1, c-2, d=a+b; a=b; b=d; ); d))}

CROSSREFS

See A007064 for references.

Sequence in context: A272453 A271252 A271541 * A219143 A122061 A299256

Adjacent sequences:  A035486 A035487 A035488 * A035490 A035491 A035492

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane.

EXTENSIONS

More terms from Randall L. Rathbun (randallr(AT)abac.com), Jan 25 2002

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 January 17 14:12 EST 2019. Contains 319225 sequences. (Running on oeis4.)