Repeatedly multiply (1,0,0) by ([1,2,2],[2,1,2],[2,2,3]); sequence gives leading entry.

A090390

Repeatedly multiply (1,0,0) by ([1,2,2],[2,1,2],[2,2,3]); sequence gives leading entry.

Terms

    a(0) =1a(1) =1a(2) =9a(3) =49a(4) =289a(5) =1681a(6) =9801a(7) =57121a(8) =332929a(9) =1940449a(10) =11309769a(11) =65918161a(12) =384199201a(13) =2239277041a(14) =13051463049a(15) =76069501249a(16) =443365544449

External references