id:A077431 - OEIS Search Results

Search: id:A077431

Displaying 1-1 of 1 results found.

page 1

n repeated in decimal representation, but separated by enough zeros that the square has the pattern (n^2)(2n^2)(n^2).

+0
4

11, 22, 303, 404, 505, 606, 707, 8008, 9009, 10010, 11011, 12012, 13013, 14014, 15015, 16016, 17017, 18018, 19019, 20020, 21021, 22022, 230023, 240024, 250025, 260026, 270027, 280028, 290029, 300030, 310031, 320032, 330033, 340034, 350035 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`A077433(n) = number of separating zeros.`
	FORMULA	`n(1+10^(1+floor(Log10(2n^2)))).`
	EXAMPLE	`a(17) = 17017, as 17017^2 = 289578289 = A077432(17) = 289'578'289 and 289=17^2 and 578=2*289.`
	CROSSREFS	`Cf. A020338, A004216, A077430.` `Sequence in context: A083511 A067894 A094620 this_sequence A118133 A155973 A110044` `Adjacent sequences: A077428 A077429 A077430 this_sequence A077432 A077433 A077434`
	KEYWORD	`nonn,base`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Nov 05 2002`

page 1

Search completed in 0.002 seconds

Last modified November 30 13:13 EST 2009. Contains 167758 sequences.

AT&T Labs Research