Number of length n+2 0..3 arrays with no consecutive three elements summing to more than 3.

A241609

Number of length n+2 0..3 arrays with no consecutive three elements summing to more than 3.

Terms

    a(0) =20a(1) =50a(2) =125a(3) =295a(4) =711a(5) =1730a(6) =4175a(7) =10077a(8) =24377a(9) =58928a(10) =142396a(11) =344201a(12) =832011a(13) =2010980a(14) =4860690a(15) =11748840a(16) =28397936a(17) =68640170a(18) =165909570a(19) =401018224a(20) =969296175a(21) =2342874854a(22) =5662936565a(23) =13687818660a(24) =33084669767a(25) =79968578621

External references