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A132457 Composites of the form ((x+y)/3+2)/(x-y), where x and y are prime. 0
4, 8, 12, 14, 18, 22, 28, 33, 38, 39, 52, 64, 74, 77, 78, 82, 84, 108, 113, 124, 129, 138, 143, 144, 147, 148, 152, 162, 169, 182, 183, 203, 214, 217, 218, 238, 242, 248, 249, 259, 262, 264, 267, 278, 298, 312, 333, 334, 348, 357, 368, 374, 392, 399, 407, 413 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

EXAMPLE

If x=23 and y=19, then ((23+19)/3+2)/(23-19)=16/4=4=a(1).

If x=47 and y=43, then ((47+43)/3+2)/(47-43)=32/4=8=a(2).

If x=71 and y=67, then ((71+67)/3+2)/(71-67)=48/4=12=a(3).

If x=83 and y=79, then ((83+79)/3+2)/(83-79)=72/4=18=a(4).

If x=107 and y=103, then ((107+1103)/3+2)/(107-103)=88/4=22=a(5).

If x=131 and y=127, then ((131+127)/3+2)/(131-127)=112/4=28=a(6),

etc.

CROSSREFS

Cf. A000040, A002808, A141468.

Sequence in context: A257221 A092453 A285374 * A311080 A316360 A311081

Adjacent sequences:  A132454 A132455 A132456 * A132458 A132459 A132460

KEYWORD

nonn,less

AUTHOR

Juri-Stepan Gerasimov, Aug 28 2008

EXTENSIONS

Corrected omission in Examples section. - Dan Graham (dan.a.graham(AT)hotmail.co.uk), Apr 11 2010

STATUS

approved

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Last modified September 21 17:46 EDT 2019. Contains 327273 sequences. (Running on oeis4.)