id:A164383 - OEIS Search Results

Search: id:A164383

Displaying 1-1 of 1 results found.

page 1

Composite numbers of the form 4 + some prime.

+0
2

6, 9, 15, 21, 27, 33, 35, 45, 51, 57, 63, 65, 75, 77, 87, 93, 105, 111, 117, 135, 141, 143, 153, 155, 161, 171, 177, 183, 185, 195, 201, 203, 215, 231, 237, 243, 245, 255, 261, 267, 273, 275, 285, 287, 297, 315, 321, 335, 341, 351, 357, 363, 371, 377, 387, 393 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`a(1)= 4+2(prime)=6 (composite). a(2)= 4+5(prime)=9 (composite). a(3)=4+11(prime) = 15 (composite).`
	CROSSREFS	`Cf. A000040, A002808, A107986, A046132.` `Sequence in context: A139321 A020648 A020147 this_sequence A001748 A097426 A075278` `Adjacent sequences: A164380 A164381 A164382 this_sequence A164384 A164385 A164386`
	KEYWORD	`nonn`
	AUTHOR	`Juri-Stepan Gerasimov (2stepan(AT)rambler.ru), Aug 14 2009`
	EXTENSIONS	`Edited, entries checked, by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Aug 20 2009`

page 1

Search completed in 0.004 seconds

Last modified December 16 12:57 EST 2009. Contains 170825 sequences.

AT&T Labs Research