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A067429
Ninth column of triangle A067425.
3
1, 12, 432, 15552, 559872, 20155392, 725594112, 26121388032, 940369969152, 33853318889472, 1218719480020992, 43873901280755712, 1579460446107205632, 56860576059859402752, 2046980738154938499072, 73691306573577785966592
OFFSET
0,2
FORMULA
a(n) = A067425(n+8, 8).
a(n) = 12*(4*9)^(n-1), n >= 1, a(0)=1.
G.f.: (1-24*x)/(1-36*x).
MATHEMATICA
Join[{1}, NestList[36#&, 12, 20]] (* Harvey P. Dale, Feb 28 2017 *)
PROG
(Magma) [Ceiling(12*(4*9)^(n-1)): n in [0..20]]; // Vincenzo Librandi, Oct 03 2011
CROSSREFS
Cf. A067428 (eighth column), A009980 (powers of 36).
Sequence in context: A123778 A347795 A129006 * A054913 A221955 A070285
KEYWORD
nonn,easy
AUTHOR
Wolfdieter Lang, Jan 25 2002
STATUS
approved