n^4*a(n) is the number of spheres in complex projective space tangent to 4 smooth surfaces of degree n in general position.

A030654

n^4*a(n) is the number of spheres in complex projective space tangent to 4 smooth surfaces of degree n in general position.

Terms

    a(0) =8a(1) =497a(2) =9352a(3) =81473a(4) =451976a(5) =1863793a(6) =6230792a(7) =17817857a(8) =45159688a(9) =103980401a(10) =221416328a(11) =441884737a(12) =834981512a(13) =1505831153a(14) =2608352776a(15) =4361946113a(16) =7072141832a(17) =11155800817a(18) =17171487368a(19) =25855681601

External references