login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A243887 (p^2 - 3)/2 for odd primes p. 2
3, 11, 23, 59, 83, 143, 179, 263, 419, 479, 683, 839, 923, 1103, 1403, 1739, 1859, 2243, 2519, 2663, 3119, 3443, 3959, 4703, 5099, 5303, 5723, 5939, 6383, 8063, 8579, 9383, 9659, 11099, 11399, 12323, 13283, 13943, 14963, 16019, 16379, 18239, 18623, 19403, 19799 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 1..1000

FORMULA

a(n) = A216244(n) - 1.  [Robert Israel, Jun 15 2014]

MATHEMATICA

Table[(Prime[n]^2 - 3)/2, {n, 2, 100}]

PROG

(MAGMA) [(p^2-3)/2: p in PrimesInInterval(3, 300)];

CROSSREFS

Cf. A065091, A165635, A216244.

Sequence in context: A128928 A289888 A145477 * A098828 A165635 A301876

Adjacent sequences:  A243884 A243885 A243886 * A243888 A243889 A243890

KEYWORD

nonn,easy

AUTHOR

Vincenzo Librandi, Jun 15 2014

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 January 29 07:03 EST 2020. Contains 331337 sequences. (Running on oeis4.)