id:A046109 - OEIS Search Results

Search: id:A046109

Displaying 1-1 of 1 results found.

page 1

Number of lattice points (x,y) on the circumference of a circle of radius n with center at (0,0).

+0
8

1, 4, 4, 4, 4, 12, 4, 4, 4, 4, 12, 4, 4, 12, 4, 12, 4, 12, 4, 4, 12, 4, 4, 4, 4, 20, 12, 4, 4, 12, 12, 4, 4, 4, 12, 12, 4, 12, 4, 12, 12, 12, 4, 4, 4, 12, 4, 4, 4, 4, 20, 12, 12, 12, 4, 12, 4, 4, 12, 4, 12, 12, 4, 4, 4, 36, 4, 4, 12, 4, 12, 4, 4, 12, 12, 20, 4, 4, 12, 4, 12, 4, 12, 4, 4, 36 (list; graph; listen)

	OFFSET	`0,2`
	LINKS	`Michael Gilleland, Some Self-Similar Integer Sequences` `Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.`
	FORMULA	`8*A046080(n) + 4 = a(n) for n > 0.`
	CROSSREFS	`Cf. A046110-A046112. Also A000328=A051132+A046109.` `a(n) = A004018(n^2).` `Sequence in context: A053187 A013189 A035621 this_sequence A107680 A134660 A132383` `Adjacent sequences: A046106 A046107 A046108 this_sequence A046110 A046111 A046112`
	KEYWORD	`nonn,easy,nice`
	AUTHOR	`Eric Weisstein (eric(AT)weisstein.com)`

page 1

Search completed in 0.002 seconds

Last modified December 16 17:18 EST 2009. Contains 170825 sequences.

AT&T Labs Research