Somos-6 sequence: a(n) = (a(n-1) * a(n-5) + a(n-2) * a(n-4) + a(n-3)^2) / a(n-6), a(0) = ... = a(5) = 1.

A006722

Somos-6 sequence: a(n) = (a(n-1) * a(n-5) + a(n-2) * a(n-4) + a(n-3)^2) / a(n-6), a(0) = ... = a(5) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =3a(7) =5a(8) =9a(9) =23a(10) =75a(11) =421a(12) =1103a(13) =5047a(14) =41783a(15) =281527a(16) =2534423a(17) =14161887a(18) =232663909a(19) =3988834875a(20) =45788778247a(21) =805144998681

External references