a(n)=6*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=5, a(2)=30 .

A155195

a(n)=6*a(n-1)+a(n-2), n>2 ; a(0)=1, a(1)=5, a(2)=30 .

Terms

    a(0) =1a(1) =5a(2) =30a(3) =185a(4) =1140a(5) =7025a(6) =43290a(7) =266765a(8) =1643880a(9) =10130045a(10) =62424150a(11) =384674945a(12) =2370473820a(13) =14607517865a(14) =90015581010a(15) =554701003925

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