Surface area of n-dimensional sphere of radius r is n*V_n*r^(n-1) = n*Pi^(n/2)*r^(n-1)/(n/2)! = S_n*Pi^floor(n/2)*r^(n-1); sequence gives denominator of S_n.
A072479
Surface area of n-dimensional sphere of radius r is n*V_n*r^(n-1) = n*Pi^(n/2)*r^(n-1)/(n/2)! = S_n*Pi^floor(n/2)*r^(n-1); sequence gives denominator of S_n.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =3a(6) =1a(7) =15a(8) =3a(9) =105a(10) =12a(11) =945a(12) =60a(13) =10395a(14) =360a(15) =135135a(16) =2520a(17) =2027025a(18) =20160a(19) =34459425a(20) =181440a(21) =654729075a(22) =1814400a(23) =13749310575a(24) =19958400a(25) =316234143225a(26) =239500800a(28) =3113510400a(30) =43589145600
External references
- oeis: A072479