|
|
A319613
|
|
a(n) = prime(n) * prime(2n).
|
|
7
|
|
|
6, 21, 65, 133, 319, 481, 731, 1007, 1403, 2059, 2449, 3293, 4141, 4601, 5311, 6943, 8201, 9211, 10921, 12283, 13213, 15247, 16517, 19847, 22213, 24139, 25853, 28141, 29539, 31753, 37211, 40741, 43429, 46843, 52001, 54209, 58561, 62429, 66299, 70757, 75359
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MAPLE
|
a:= n-> (p-> p(n)*p(2*n))(ithprime):
|
|
MATHEMATICA
|
Table[Prime[n]*Prime[2*n], {n, 50}]
|
|
PROG
|
|
|
CROSSREFS
|
Cf. A000040, A001358, A018819, A031215, A031368, A056239, A087897, A101417, A112798, A120641, A320340, A323092, A323093, A323094.
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|