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A165148
a(n) = (3*8^n-4^n)/2.
4
1, 10, 88, 736, 6016, 48640, 391168, 3137536, 25133056, 201195520, 1610088448, 12882804736, 103070826496, 824600166400, 6596935548928, 52776021262336, 422210317582336, 3377691130593280, 27021563404484608, 216172644674830336
OFFSET
0,2
COMMENTS
Binomial transform of A165147. Inverse binomial transform of A165149.
FORMULA
a(n) = 12*a(n-1)-32*a(n-2) for n > 1; a(0) = 1, a(1) = 10.
G.f.: (1-2*x)/((1-4*x)*(1-8*x)).
MATHEMATICA
Table[(3*8^n-4^n)/2, {n, 0, 20}] (* Harvey P. Dale, Jul 23 2014 *)
PROG
(Magma) [ (3*8^n-4^n)/2: n in [0..19] ];
CROSSREFS
Sequence in context: A185060 A125398 A273585 * A287828 A264320 A298134
KEYWORD
nonn,easy
AUTHOR
Klaus Brockhaus, Sep 15 2009
STATUS
approved