a(n)=5*a(n-1)+30*a(n-2) for n>=3, a(0)=1, a(1)=5, a(2)=50 .

A133646

a(n)=5*a(n-1)+30*a(n-2) for n>=3, a(0)=1, a(1)=5, a(2)=50 .

Terms

    a(0) =1a(1) =5a(2) =50a(3) =400a(4) =3500a(5) =29500a(6) =252500a(7) =2147500a(8) =18312500a(9) =155987500a(10) =1329312500a(11) =11326187500a(12) =96510312500a(13) =822337187500

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