A056897 - OEIS

This site is supported by donations to The OEIS Foundation.

A056897

Smallest square where a(n)+n is prime.

1, 0, 0, 1, 0, 1, 0, 9, 4, 1, 0, 1, 0, 9, 4, 1, 0, 1, 0, 9, 16, 1, 0, 49, 4, 81, 4, 1, 0, 1, 0, 9, 4, 9, 36, 1, 0, 9, 4, 1, 0, 1, 0, 9, 16, 1, 0, 25, 4, 9, 16, 1, 0, 25, 4, 81, 4, 1, 0, 1, 0, 9, 4, 9, 36, 1, 0, 81, 4, 1, 0, 1, 0, 9, 4, 25, 36, 1, 0, 9, 16, 1, 0, 25, 4, 81, 16, 1, 0, 49, 16, 9, 4, 9 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,8`
	FORMULA	`a(n) =A056896(n)-n =A056898(n)^2`
	EXAMPLE	`a(8)=9 since 9 is a square and 9+8=7 which is a prime`
	CROSSREFS	`Cf. A000040, A002496, A056892-A056898.` `Sequence in context: A203131 A021918 A112146 * A010158 A098454 A154206` `Adjacent sequences: A056894 A056895 A056896 * A056898 A056899 A056900`
	KEYWORD	`nonn`
	AUTHOR	`Henry Bottomley (se16(AT)btinternet.com), Jul 05 2000`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 23:04 EST 2012. Contains 205686 sequences.