Each number is the sum of the cubes of its 3 sections.

Terms

a(0) =153a(1) =370a(2) =371a(3) =407a(4) =165033a(5) =221859a(6) =336700a(7) =336701a(8) =340067a(9) =341067a(10) =407000a(11) =407001a(12) =444664a(13) =487215a(14) =982827a(15) =983221a(16) =166500333a(17) =296584415a(18) =333667000a(19) =333667001a(20) =334000667a(21) =710656413a(22) =828538472a(23) =142051701000a(24) =166650003333a(25) =262662141664a(26) =333366670000