Tetrahedral numbers which are products of three distinct primes.

Terms

a(0) =165a(1) =286a(2) =455a(3) =969a(4) =1771a(5) =4495a(6) =9139a(7) =12341a(8) =32509a(9) =176851a(10) =437989a(11) =657359a(12) =939929a(13) =3737581a(14) =9290431a(15) =21084251a(16) =26536591a(17) =39338069a(18) =44101441a(19) =61690919a(20) =92568571a(21) =112805879a(22) =289442201a(23) =381588019a(24) =439918931a(25) =495593039a(26) =711215371a(27) =815946449a(28) =1008077071a(29) =1103914379