OFFSET
1,2
LINKS
G. C. Greubel, Table of n, a(n) for n = 1..825
G. Kilibarda and V. Jovovic, Enumeration of some classes of T_0-hypergraphs, arXiv:1411.4187 [math.CO], 2014.
Index entries for linear recurrences with constant coefficients, signature (43,-701,5477,-20658,30240).
FORMULA
a(n) = 16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n.
G.f.: x*(318*x^3+187*x^2-24*x-1) / ((5*x-1)*(6*x-1)*(7*x-1)*(9*x-1)*(16*x-1)). - Colin Barker, Jul 13 2013
MATHEMATICA
Table[16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n, {n, 1, 50}] (* G. C. Greubel, Oct 08 2017 *)
PROG
(PARI) for(n=1, 50, print1(16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n, ", ")) \\ G. C. Greubel, Oct 08 2017
(Magma) [16^n - 4*9^n - 3*7^n + 12*6^n - 6*5^n: n in [1..50]]; // G. C. Greubel, Oct 08 2017
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Goran Kilibarda, Vladeta Jovovic, Apr 15 2004
EXTENSIONS
More terms from Colin Barker, Jul 13 2013
STATUS
approved