Structured disdyakis dodecahedral numbers (vertex structure 9).

Terms

a(0) =1a(1) =26a(2) =115a(3) =308a(4) =645a(5) =1166a(6) =1911a(7) =2920a(8) =4233a(9) =5890a(10) =7931a(11) =10396a(12) =13325a(13) =16758a(14) =20735a(15) =25296a(16) =30481a(17) =36330a(18) =42883a(19) =50180a(20) =58261a(21) =67166a(22) =76935a(23) =87608a(24) =99225a(25) =111826a(26) =125451a(27) =140140a(28) =155933a(29) =172870