|
Search: id:A136612
|
|
|
| A136612 |
|
((Prime(n+3) + prime(n+1)) - (prime(n+2) + prime(n))). |
|
+0
1
|
|
| 3, 6, 4, 8, 4, 8, 8, 6, 12, 6, 8, 8, 8, 10, 8, 12, 6, 8, 10, 6, 12, 12, 10, 10, 8, 4, 8, 16, 8, 20, 6, 16, 4, 16, 8, 10, 12, 10, 8, 16, 4, 14, 4, 16, 14, 16, 14, 8, 8, 6, 16, 8, 16, 12, 8, 12, 6, 8, 14, 16, 14, 16, 8, 16, 10, 24, 8, 14, 8, 12, 12, 14, 10, 12, 12, 10, 16, 14, 10, 20, 4, 16, 6
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
FORMULA
|
a(n)=A001223(n)+A001223(n+2). - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 21 2008
|
|
EXAMPLE
|
2 + 5 = 7
3 + 7 = 10
5 + 11 = 16
7 + 13 = 20
...
so the sequence is: 10 - 7 = 3,
16 - 10 = 6,
20 - 16 = 4,
28 - 20 = 8,
...
|
|
MAPLE
|
A001223 := proc(n) ithprime(n+1)-ithprime(n) ; end: A136612 := proc(n) A001223(n)+A001223(n+2) ; end: seq(A136612(n), n=1..100) ; - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 21 2008
|
|
CROSSREFS
|
Cf. A000040.
Sequence in context: A090963 A112374 A093064 this_sequence A004546 A154890 A100000
Adjacent sequences: A136609 A136610 A136611 this_sequence A136613 A136614 A136615
|
|
KEYWORD
|
easy,nonn
|
|
AUTHOR
|
Odimar Fabeny (aifab(AT)yahoo.com.br), Apr 14 2008
|
|
EXTENSIONS
|
Corrected and extended by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Apr 21 2008
|
|
|
Search completed in 0.002 seconds
|
