|
| |
|
|
A133072
|
|
n^5+n^3-n^2. Exponents are the prime numbers in decreasing order.
|
|
2
| |
|
|
0, 1, 36, 261, 1072, 3225, 7956, 17101, 33216, 59697, 100900, 162261, 250416, 373321, 540372, 762525, 1052416, 1424481, 1895076, 2482597, 3207600, 4092921, 5163796, 6447981, 7975872, 9780625, 11898276, 14367861, 17231536, 20534697, 24326100, 28657981, 33586176, 39170241, 45473572
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 0,3
|
|
|
FORMULA
| a(n) = n^5+n^3-n^2
G.f.: x*(60*x^2+3*x^4+30*x+1+26*x^3)/(x-1)^6. - R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Nov 14 2007
|
|
|
EXAMPLE
| a(7)=17101 because 7^5=16807, 7^3=343, 7^2=49 and we can write 16807+343-49=17101.
|
|
|
PROG
| (MAGMA)[n^5+n^3-n^2: n in [0..50]][From Vincenzo Librandi, Dec 15 2010]
|
|
|
CROSSREFS
| Cf. A000290, A000578, A000584, A011379, A045991, A100019.
Sequence in context: A030165 A017342 A115332 * A115223 A135181 A202958
Adjacent sequences: A133069 A133070 A133071 * A133073 A133074 A133075
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Omar E. Pol (info(AT)polprimos.com), Nov 01 2007
|
|
|
EXTENSIONS
| More terms from Vincenzo Librandi, Dec 15 2010
|
| |
|
|
