id:A067559 - OEIS Search Results

Search: id:A067559

Displaying 1-1 of 1 results found.

page 1

Numbers n such that Floor[Pi*n^2] is prime.

+0
1

1, 6, 17, 31, 34, 41, 45, 50, 51, 61, 69, 73, 74, 81, 103, 108, 111, 142, 148, 175, 192, 201, 202, 203, 232, 234, 273, 277, 281, 310, 319, 329, 342, 348, 349, 351, 378, 387, 416, 421, 428, 435, 459, 478, 486, 521, 526, 575, 593, 597, 603, 605, 623, 648, 661 (list; graph; listen)

	OFFSET	`1,2`
	EXAMPLE	`Floor[Pi*6^2] = 113, a prime, so 6 is a term of the sequence.`
	MATHEMATICA	`Select[Range[1, 10^3], PrimeQ[Floor[Pi * #^2]] &]`
	CROSSREFS	`Sequence in context: A017461 A061875 A063230 this_sequence A096426 A130051 A038795` `Adjacent sequences: A067556 A067557 A067558 this_sequence A067560 A067561 A067562`
	KEYWORD	`easy,nonn`
	AUTHOR	`Joseph L. Pe (joseph_l_pe(AT)hotmail.com), Jan 29 2002`

page 1

Search completed in 0.002 seconds

Last modified December 2 11:54 EST 2009. Contains 167921 sequences.

AT&T Labs Research