Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (1,4,4,...) and super- and subdiagonals (1,1,1,...).

A124576

Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (1,4,4,...) and super- and subdiagonals (1,1,1,...).

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =1a(6) =7a(7) =23a(8) =9a(9) =1a(10) =30a(11) =108a(12) =60a(13) =13a(14) =1a(15) =138a(16) =522a(17) =361a(18) =113a(19) =17a(20) =1a(21) =660a(22) =2587a(23) =2079a(24) =830a(25) =182a(26) =21a(27) =1a(28) =3247a(29) =13087

External references