|
%I #11 Jun 29 2023 10:39:35
%S 1,10,280,7840,219520,6146560,172103680,4818903040,134929285120,
%T 3778019983360,105784559534080,2961967666954240,82935094674718720,
%U 2322182650892124160,65021114224979476480,1820591198299425341440
%N Seventh column of triangle A067425.
%H Vincenzo Librandi, <a href="/A067427/b067427.txt">Table of n, a(n) for n = 0..600</a>
%H <a href="/index/Rec#order_01">Index entries for linear recurrences with constant coefficients</a>, signature (28).
%F a(n) = A067425(n+6, 6).
%F a(n) = 10*(4*7)^(n-1), n >= 1, a(0)=1.
%F G.f.: (1-18*x)/(1-28*x).
%o (Magma) [Ceiling(10*(4*7)^(n-1)): n in [0..20]]; // _Vincenzo Librandi_, Oct 03 2011
%Y Cf. A067426 (sixth column), A067428 (eighth column), A009972 (powers of 28).
%K nonn,easy
%O 0,2
%A _Wolfdieter Lang_, Jan 25 2002
| 