|
Search: id:A074327
|
|
| |
|
| 3, 311, 1619, 3671, 1742537, 148948139, 16149760533341
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
FORMULA
|
a(n)=p(m) where m=2^x and p(m+1)-p(m)=2.
|
|
EXAMPLE
|
7th term in A074326 is 39, so prime[549755813888]=16149760533341=a(7) and 16149760533343 is the larger twin.
|
|
MATHEMATICA
|
s=0; Do[s=Prime[1+2^n]-Prime[2^n]; If[s==2, Print[Prime[2^n]]], {n, 1, 40}]
|
|
CROSSREFS
|
Cf. A051439, A033844, A073798, A000079, A074325, A074326.
Sequence in context: A085319 A123032 A132305 this_sequence A062333 A083974 A135698
Adjacent sequences: A074324 A074325 A074326 this_sequence A074328 A074329 A074330
|
|
KEYWORD
|
more,nonn
|
|
AUTHOR
|
Labos E. (labos(AT)ana.sote.hu), Aug 21 2002
|
|
|
Search completed in 0.002 seconds
|
