Maximal number of regions into which 4-space can be divided by n hyperspheres.

Terms

a(0) =1a(1) =2a(2) =4a(3) =8a(4) =16a(5) =32a(6) =62a(7) =114a(8) =198a(9) =326a(10) =512a(11) =772a(12) =1124a(13) =1588a(14) =2186a(15) =2942a(16) =3882a(17) =5034a(18) =6428a(19) =8096a(20) =10072a(21) =12392a(22) =15094a(23) =18218a(24) =21806a(25) =25902a(26) =30552a(27) =35804a(28) =41708a(29) =48316