id:A087278 - OEIS Search Results

Search: id:A087278

Displaying 1-1 of 1 results found.

page 1

Distance to nearest square is not greater than 1.

+0
2

0, 1, 2, 3, 4, 5, 8, 9, 10, 15, 16, 17, 24, 25, 26, 35, 36, 37, 48, 49, 50, 63, 64, 65, 80, 81, 82, 99, 100, 101, 120, 121, 122, 143, 144, 145, 168, 169, 170, 195, 196, 197, 224, 225, 226, 255, 256, 257, 288, 289, 290, 323, 324, 325, 360, 361, 362, 399, 400, 401 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Union of A005563, A000290 and A002522:` `a(3k) = (k+1)^2 - 1 = A005563(k+1);` `a(3k+1) = (k+1)^2 = A000290(k+1);` `a(3*k+2) = (k+1)^2 + 1 = A002522(k+1);`
	FORMULA	`a(n) = floor(n/3)*(floor(n/3) + 2) + n mod 3.`
	CROSSREFS	`Cf. A002264, A010872, A087279.` `Sequence in context: A005792 A102471 A094566 this_sequence A054219 A116214 A161389` `Adjacent sequences: A087275 A087276 A087277 this_sequence A087279 A087280 A087281`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Aug 28 2003`

page 1

Search completed in 0.002 seconds

Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

AT&T Labs Research