Structured triakis octahedral numbers (vertex structure 4).

Terms

a(0) =1a(1) =14a(2) =60a(3) =160a(4) =335a(5) =606a(6) =994a(7) =1520a(8) =2205a(9) =3070a(10) =4136a(11) =5424a(12) =6955a(13) =8750a(14) =10830a(15) =13216a(16) =15929a(17) =18990a(18) =22420a(19) =26240a(20) =30471a(21) =35134a(22) =40250a(23) =45840a(24) =51925a(25) =58526a(26) =65664a(27) =73360a(28) =81635a(29) =90510