Somos-7 sequence: a(n) = (a(n-1) * a(n-6) + a(n-2) * a(n-5) + a(n-3) * a(n-4)) / a(n-7), a(0) = ... = a(6) = 1.

A006723

Somos-7 sequence: a(n) = (a(n-1) * a(n-6) + a(n-2) * a(n-5) + a(n-3) * a(n-4)) / a(n-7), a(0) = ... = a(6) = 1.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =3a(8) =5a(9) =9a(10) =17a(11) =41a(12) =137a(13) =769a(14) =1925a(15) =7203a(16) =34081a(17) =227321a(18) =1737001a(19) =14736001a(20) =63232441a(21) =702617001a(22) =8873580481a(23) =122337693603

External references