a(n) = 10*a(n-1) - 17*a(n-2) for n > 1; a(0) = 1, a(1) = 21.

A164606

a(n) = 10*a(n-1) - 17*a(n-2) for n > 1; a(0) = 1, a(1) = 21.

Terms

    a(0) =1a(1) =21a(2) =193a(3) =1573a(4) =12449a(5) =97749a(6) =765857a(7) =5996837a(8) =46948801a(9) =367541781a(10) =2877288193a(11) =22524671653a(12) =176332817249

External references