login
A119772
a(n) = prime(4^n).
3
2, 7, 53, 311, 1619, 8161, 38873, 180503, 821641, 3681131, 16290047, 71378569, 310248241, 1339484197, 5750079047, 24563311309, 104484802057, 442795487221, 1870358526653, 7877263558621, 33089240375501, 138666449011757, 579863159340527, 2420094683001859, 10082409897709157
OFFSET
0,1
LINKS
Amiram Eldar, Table of n, a(n) for n = 0..39 (calculated from the b-file at A033844; terms 0..28 from Charles R Greathouse IV, a(26) corrected)
Andrew Booker, The Nth Prime Page.
FORMULA
a(n) = A033844(2*n). - Amiram Eldar, Jun 06 2024
MATHEMATICA
Prime[4^Range[0, 20]] (* Harvey P. Dale, Jul 12 2011 *)
PROG
(PARI) a(n)=prime(4^n) \\ Charles R Greathouse IV, Nov 02 2014
CROSSREFS
Cf. A033844.
Sequence in context: A106898 A106899 A259530 * A104084 A053465 A193191
KEYWORD
nonn,hard
AUTHOR
Jim Snow (jsnow(AT)mitre.org), Jun 22 2006
EXTENSIONS
a(20)-a(24) from Charles R Greathouse IV, Nov 02 2014
STATUS
approved