Figurate numbers based on the 600-cell (4-D polytope with Schlaefli symbol {3,3,5}).

Terms

a(0) =1a(1) =120a(2) =947a(3) =3652a(4) =9985a(5) =22276a(6) =43435a(7) =76952a(8) =126897a(9) =197920a(10) =295251a(11) =424700a(12) =592657a(13) =806092a(14) =1072555a(15) =1400176a(16) =1797665a(17) =2274312a(18) =2839987a(19) =3505140a(20) =4280801a(21) =5178580a(22) =6210667a(23) =7389832a(24) =8729425a(25) =10243376a(26) =11946195a(27) =13852972a(28) =15979377a(29) =18341660