Structured disdyakis dodecahedral numbers (vertex structure 7).

Terms

a(0) =1a(1) =26a(2) =117a(3) =316a(4) =665a(5) =1206a(6) =1981a(7) =3032a(8) =4401a(9) =6130a(10) =8261a(11) =10836a(12) =13897a(13) =17486a(14) =21645a(15) =26416a(16) =31841a(17) =37962a(18) =44821a(19) =52460a(20) =60921a(21) =70246a(22) =80477a(23) =91656a(24) =103825a(25) =117026a(26) =131301a(27) =146692a(28) =163241a(29) =180990