



43, 28, 15, 4, 5, 12, 17, 20, 21, 20, 17, 12, 5, 4, 15, 28, 43, 60, 79, 100, 123, 148, 175, 204, 235, 268, 303, 340, 379, 420, 463, 508, 555, 604, 655, 708, 763, 820, 879, 940, 1003, 1068, 1135, 1204, 1275, 1348, 1423, 1500, 1579, 1660, 1743, 1828, 1915, 2004, 2095, 2188
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OFFSET

0,1


REFERENCES

V. van der Noort and N. J. A. Sloane, Paper in preparation, 2007.


LINKS

Colin Barker, Table of n, a(n) for n = 0..1000
Index to sequences with linear recurrences with constant coefficients, signature (3,3,1).


FORMULA

a(n) = n^216*n+43.
a(n) = 3*a(n1)3*a(n2)+a(n3). G.f.: (60*x^2101*x+43) / (x1)^3.  Colin Barker, Nov 12 2014


MATHEMATICA

CoefficientList[Series[(60 x^2  101 x + 43) / (1  x)^3, {x, 0, 60}], x] (* Vincenzo Librandi, Nov 12 2014 *)


PROG

(PARI) Vec((60*x^2101*x+43)/(x1)^3 + O(x^100)) \\ Colin Barker, Nov 12 2014
(MAGMA) [n^216*n+43: n in [0..60]]; // Vincenzo Librandi, Nov 12 2014


CROSSREFS

A row of A127080.
Sequence in context: A225210 A033363 A187088 * A051614 A165864 A223746
Adjacent sequences: A127144 A127145 A127146 * A127148 A127149 A127150


KEYWORD

sign,easy


AUTHOR

N. J. A. Sloane, Mar 24 2007


STATUS

approved



