a(n) = 10*a(n-1) - 12*a(n-2) for n > 1; a(0) = 1, a(1) = 4 .

A152599

a(n) = 10*a(n-1) - 12*a(n-2) for n > 1; a(0) = 1, a(1) = 4 .

Terms

    a(0) =1a(1) =4a(2) =28a(3) =232a(4) =1984a(5) =17056a(6) =146752a(7) =1262848a(8) =10867456a(9) =93520384a(10) =804794368a(11) =6925699072a(12) =59599458304a(13) =512886194176

External references