Smith cubic numbers.

Terms

a(0) =27a(1) =729a(2) =19683a(3) =474552a(4) =7077888a(5) =7414875a(6) =8489664a(7) =62099136a(8) =112678587a(9) =236029032a(10) =246491883a(11) =257259456a(12) =279726264a(13) =345948408a(14) =463684824a(15) =567663552a(16) =638277381a(17) =721734273a(18) =766060875a(19) =988047936a(20) =1177583616a(21) =1412467848a(22) =2131746903a(23) =2493326016a(24) =2714704875