|
| |
|
|
A144975
|
|
Centered heptagonal twin prime numbers.
|
|
0
| |
|
|
43, 71, 197, 463, 1933, 5741, 8233, 9283, 11173, 14561, 34651, 41203, 57793, 68111, 84631, 104147, 139301, 168631, 207523, 244861, 307693, 333103, 357281, 415381, 465011, 475273, 506731, 592663, 595547, 607153, 729373, 742211, 781397, 876751
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,1
|
|
|
LINKS
| Wikipedia, Centered_heptagonal_twin_prime_numbers
|
|
|
MATHEMATICA
| TwinPrimeQ[n_]:=If[PrimeQ[n], If[PrimeQ[n-2]||PrimeQ[n+2], True, False], False](*TwinPrimeQ*) lst={}; Do[p=(7*n^2-7*n+2)/2; If[TwinPrimeQ[p], AppendTo[lst, p]], {n, 2*6!}]; lst
|
|
|
CROSSREFS
| Sequence in context: A087765 A141971 A144974 * A087699 A054807 A139932
Adjacent sequences: A144972 A144973 A144974 * A144976 A144977 A144978
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 27 2008
|
| |
|
|
