Number of divisors = last digit.

Terms

a(0) =1a(1) =2a(2) =14a(3) =34a(4) =74a(5) =76a(6) =78a(7) =88a(8) =94a(9) =116a(10) =128a(11) =134a(12) =138a(13) =194a(14) =214a(15) =236a(16) =238a(17) =248a(18) =254a(19) =258a(20) =274a(21) =314a(22) =316a(23) =318a(24) =328a(25) =334a(26) =356a(27) =394a(28) =418a(29) =436