Cyclops octagonal numbers: a(n) = n*(3*n-2) with one "zero" digit in the middle.

Terms

a(0) =0a(1) =408a(2) =11041a(3) =18096a(4) =22016a(5) =23056a(6) =28033a(7) =38081a(8) =56033a(9) =61061a(10) =1140833a(11) =1170625a(12) =1250656a(13) =1410416a(14) =1460216a(15) =1540833a(16) =2120161a(17) =2130261a(18) =2140385a(19) =2150533a(20) =2310896a(21) =2390561a(22) =2460696a(23) =2520833a(24) =2570576a(25) =2780181a(26) =2920533a(27) =3230256a(28) =3280256a(29) =3490565