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Ninth column of triangle A067402.
2

%I #10 Sep 30 2022 14:37:45

%S 1,17,1377,111537,9034497,731794257,59275334817,4801302120177,

%T 388905471734337,31501343210481297,2551608800048985057,

%U 206680312803967789617,16741105337121390958977,1356029532306832667677137,109838392116853446081848097,8896909761465129132629695857

%N Ninth column of triangle A067402.

%C The tenth column gives [1, 19, 1900, 190000, ...].

%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (81).

%F a(n) = A067402(n+8, 8).

%F a(n) = 17*81^(n-1), n>=1, a(0) = 1.

%F G.f.: (1-64*x)/(1-81*x).

%F E.g.f.: (64 + 17*exp(81*x))/81. - _Stefano Spezia_, Sep 30 2022

%Y Cf. A067408 (eighth column).

%Y Cf. A067402.

%K nonn,easy

%O 0,2

%A _Wolfdieter Lang_, Jan 25 2002