login
This site is supported by donations to The OEIS Foundation.

 

Logo

Annual Appeal: Today, Nov 11 2014, is the 4th anniversary of the launch of the new OEIS web site. 70,000 sequences have been added in these four years, all edited by volunteers. Please make a donation (tax deductible in the US) to help keep the OEIS running.

Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A094748 Successive differences arising in A094747. 2
2, 6, 4, 10, 12, 8, 14, 18, 20, 22, 16, 24, 28, 26, 30, 36, 32, 42, 48, 34, 44, 40, 54, 60, 66, 70, 50, 52, 56, 38, 46, 58, 68, 72, 76, 78, 64, 74, 80, 62, 82, 84, 86, 88, 92, 104, 90, 96, 98, 108, 102, 114, 100, 94, 116, 124, 106, 118, 110, 112, 120, 122, 126, 132, 142, 130 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..66.

FORMULA

Absolute[A094747(n+1)-A094747(n)]

MAPLE

A094748 := proc(nmax) local a, diffs, d; a := [3] ; diffs := [] ; while nops(a) < nmax do d := 2 ; while true do if isprime(op(-1, a)-d) and not op(-1, a)-d in a and not d in diffs then a := [op(a), op(-1, a)-d] ; diffs := [op(diffs), d] ; break ; elif isprime(op(-1, a)+d) and not op(-1, a)+d in a and not d in diffs then a := [op(a), op(-1, a)+d] ; diffs := [op(diffs), d] ; break ; else d := d+2 ; fi ; od ; od; RETURN(diffs) ; end: A094748(100) ; - R. J. Mathar, Jul 29 2007

CROSSREFS

Cf. A094747.

Sequence in context: A066678 A113571 A119018 * A245579 A245788 A065879

Adjacent sequences:  A094745 A094746 A094747 * A094749 A094750 A094751

KEYWORD

nonn

AUTHOR

Amarnath Murthy, May 24 2004

EXTENSIONS

More terms from R. J. Mathar, Jul 29 2007

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

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

Last modified December 20 04:40 EST 2014. Contains 252241 sequences.