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

A351697

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

Terms

    a(0) =3a(1) =15a(2) =5a(3) =105a(4) =210a(5) =42a(6) =630a(7) =990a(8) =165a(9) =2145a(10) =3003a(11) =455a(12) =5460a(13) =7140a(14) =1020a(15) =11628a(16) =14535a(17) =1995a(18) =21945a(19) =26565a(20) =3542a(21) =37950a(22) =44850a(23) =5850a(24) =61425a(25) =71253a(26) =9135a(27) =94395a(28) =107880a(29) =13640

External references