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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A063076 Differences of A011757 ("Primes with square indices"). 3
5, 16, 30, 44, 54, 76, 84, 108, 122, 120, 166, 182, 184, 234, 192, 260, 264, 294, 304, 342, 378, 342, 408, 426, 414, 468, 488, 474, 516, 576, 588, 576, 604, 590, 696, 694, 728, 694, 756, 828, 774, 776, 870, 862, 852, 1010, 922, 998, 916, 1020, 1032, 1110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Does a(n) = k^2 have infinitely many solutions? E.g., 16 = 4^2; 576 = 24^2; ...

LINKS

Harry J. Smith, Table of n, a(n) for n = 1..1000

PROG

(PARI) j=[]; for(n=1, 150, j=concat(j, prime((n+1)^2)-prime(n^2))); j

(PARI) { default(primelimit, 2*10^7); for (n=1, 1000, write("b063076.txt", n, " ", prime((n+1)^2) - prime(n^2)) ) } \\ Harry J. Smith, Aug 17 2009

CROSSREFS

Cf. A011757, A063082.

Sequence in context: A212457 A134594 A222535 * A270805 A132479 A045944

Adjacent sequences:  A063073 A063074 A063075 * A063077 A063078 A063079

KEYWORD

nonn

AUTHOR

Santi Spadaro, Aug 04 2001

EXTENSIONS

More terms from Jason Earls, Aug 05 2001

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
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified February 22 06:12 EST 2019. Contains 320389 sequences. (Running on oeis4.)