a(n) is the numerator of the squared circumradius of a cyclic quadrilateral with sides n, n+1, n+2, n+3.

A351696

a(n) is the numerator of the squared circumradius of a cyclic quadrilateral with sides n, n+1, n+2, n+3.

Terms

    a(0) =385a(1) =3289a(2) =1729a(3) =53041a(4) =146329a(5) =38665a(6) =741169a(7) =1449721a(8) =294409a(9) =4582249a(10) =7568185a(11) =1335961a(12) =18477481a(13) =27589921a(14) =4463641a(15) =57210985a(16) =79885729a(17) =12177649a(18) =147998761a(19) =197007889a(20) =28761265a(21) =336087409a(22) =431638801a(23) =60980689a(24) =691402609a(25) =863589385a(26) =118901521a(27) =1316247361a(28) =1607847241

External references