a(n) = concatenation of n^3 with itself.

Terms

a(0) =11a(1) =88a(2) =2727a(3) =6464a(4) =125125a(5) =216216a(6) =343343a(7) =512512a(8) =729729a(9) =10001000a(10) =13311331a(11) =17281728a(12) =21972197a(13) =27442744a(14) =33753375a(15) =40964096a(16) =49134913a(17) =58325832a(18) =68596859a(19) =80008000a(20) =92619261a(21) =1064810648a(22) =1216712167a(23) =1382413824a(24) =1562515625