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A099131 Quintisection and binomial transform of 1/(1-x^4-x^5). 6

%I #11 Sep 21 2017 11:01:10

%S 1,1,1,1,2,7,22,57,128,264,529,1079,2290,5022,11148,24633,53824,

%T 116472,250880,540536,1167937,2531061,5494247,11928731,25880583,

%U 56101768,121544393,263289438,570427339,1236159756,2679343966,5807782301

%N Quintisection and binomial transform of 1/(1-x^4-x^5).

%H <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (5,-10,10,-4,1).

%F G.f.: (1-x)^4/((1-x)^5-x^4); a(n)=sum{k=0..floor(5n/4), binomial(k, 5n-4k)}; a(n)=A017827(5n).

%F a(n)=sum{k=0..floor((n+1)/2), binomial(n+k, 5k)}; - _Paul Barry_, May 09 2005

%t LinearRecurrence[{5, -10, 10, -4, 1}, {1, 1, 1, 1, 2}, 32] (* _Jean-François Alcover_, Sep 21 2017 *)

%K easy,nonn

%O 0,5

%A _Paul Barry_, Sep 29 2004

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Last modified April 23 13:51 EDT 2024. Contains 371914 sequences. (Running on oeis4.)