|
| |
|
|
A138405
|
|
a(n) = prime(n)^5 - prime(n)^2.
|
|
4
|
|
|
|
28, 234, 3100, 16758, 160930, 371124, 1419568, 2475738, 6435814, 20510308, 28628190, 69342588, 115854520, 147006594, 229342798, 418192684, 714920818, 844592580, 1350120618, 1804224310, 2073066264, 3077050158, 3939033754, 5584051528, 8587330848, 10510090300
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
LINKS
|
Vincenzo Librandi, Table of n, a(n) for n = 1..200
Index to sequences related to prime powers
|
|
|
FORMULA
|
a(n) = A001248(n)*(A030078(n) - 1). - Elmo R. Oliveira, Jan 14 2023
From Alois P. Heinz, Jan 17 2023: (Start)
a(n) = 2 * A138431(n).
a(n) = A050997(n) - A001248(n). (End)
|
|
|
MATHEMATICA
|
a = {}; Do[p = Prime[n]; AppendTo[a, p^5 - p^2], {n, 1, 50}]; a
|
|
|
PROG
|
(PARI) forprime(p=2, 1e3, print1(p^5-p^2", ")) \\ Charles R Greathouse IV, Jun 16 2011
(Magma) [NthPrime((n))^5 - NthPrime((n))^2: n in [1..30] ]; // Vincenzo Librandi, Jun 17 2011
|
|
|
CROSSREFS
|
Cf. A001248, A030078, A050997, A138431.
Sequence in context: A126523 A115224 A135497 * A024015 A223347 A242436
Adjacent sequences: A138402 A138403 A138404 * A138406 A138407 A138408
|
|
|
KEYWORD
|
nonn,easy
|
|
|
AUTHOR
|
Artur Jasinski, Mar 19 2008
|
|
|
STATUS
|
approved
|
| |
|
|
