Generalized Fibonacci numbers: a(n) = a(n-1) + 11*a(n-2).

Terms

a(0) =1a(1) =1a(2) =12a(3) =23a(4) =155a(5) =408a(6) =2113a(7) =6601a(8) =29844a(9) =102455a(10) =430739a(11) =1557744a(12) =6295873a(13) =23431057a(14) =92685660a(15) =350427287a(16) =1369969547a(17) =5224669704a(18) =20294334721a(19) =77765701465a(20) =301003383396