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

 

Logo

Annual Appeal: Please make a donation (tax deductible in USA) to keep the OEIS running. Over 5000 articles have referenced us, often saying "we discovered this result with the help of the OEIS".

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: A113571 A119018 A264647 * 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 | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy .

Last modified December 8 04:27 EST 2016. Contains 278902 sequences.