a(n) = p(2,n), where p(x,n) is the strong divisibility sequence of polynomials based on sqrt(2) as in A327320.

A329007

a(n) = p(2,n), where p(x,n) is the strong divisibility sequence of polynomials based on sqrt(2) as in A327320.

Terms

    a(0) =1a(1) =9a(2) =21a(3) =405a(4) =2511a(5) =5103a(6) =92583a(7) =557685a(8) =372519a(9) =20135709a(10) =120873303a(11) =241805655a(12) =4353033231a(13) =26119793709a(14) =52241181741a(15) =940355620245

External references