

A109614


n^3 followed by n followed by n^2.


2



1, 1, 1, 8, 2, 4, 27, 3, 9, 64, 4, 16, 125, 5, 25, 216, 6, 36, 343, 7, 49, 512, 8, 64, 729, 9, 81, 1000, 10, 100, 1331, 11, 121, 1728, 12, 144, 2197, 13, 169, 2744, 14, 196, 3375, 15, 225, 4096, 16, 256, 4913, 17, 289, 5832, 18, 324, 6859, 19, 361, 8000, 20, 400
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OFFSET

1,4


LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..3000
Index entries for sequences related to linear recurrences with constant coefficients, signature (0,0,4,0,0,6,0,0,4,0,0,1).


FORMULA

a(n)=4*a(n3)6*a(n6)+4*a(n9)a(n12). G.f.: (1xx^24*x^3+2*x^4x^6x^7+x^8)/((x1)^4*(1+x+x^2)^4). [From R. J. Mathar, Jun 26 2009]


PROG

(Haskell)
import Data.List (transpose)
a109614 n = a109614_list !! (n1)
a109614_list = concat $ transpose
[tail a000578_list, a000027_list, tail a000290_list]
 Reinhard Zumkeller, Mar 14 2014


CROSSREFS

Cf. A000463.
Cf. A000578, A000027, A000290.
Sequence in context: A021552 A008830 A217294 * A201583 A179048 A173158
Adjacent sequences: A109611 A109612 A109613 * A109615 A109616 A109617


KEYWORD

nonn,easy,look


AUTHOR

Mohammad K. Azarian, Aug 30 2005


STATUS

approved



