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Expansion of 1/((1-2x)(1-4x)(1-5x)(1-7x)).
0

%I #9 Oct 01 2023 02:23:04

%S 1,18,209,1998,17157,137970,1063273,7962966,58471853,423482202,

%T 3037367697,21634921854,153344743189,1083048862914,7630057197881,

%U 53656123623462,376830071424765,2644030889883306,18539455617424225

%N Expansion of 1/((1-2x)(1-4x)(1-5x)(1-7x)).

%H <a href="/index/Rec#order_04">Index entries for linear recurrences with constant coefficients</a>, signature (18, -115, 306, -280).

%F a(n) = -4*2^n/15 +32*4^n/3 -125*5^n/6 +343*7^n/30. - _R. J. Mathar_, Jun 20 2013

%K nonn,easy

%O 0,2

%A _N. J. A. Sloane_.