Numbers k such that k through k+4 all have the same number of divisors.

Terms

a(0) =11605a(1) =12855a(2) =13782a(3) =19142a(4) =21494a(5) =28374a(6) =28375a(7) =40311a(8) =42805a(9) =50582a(10) =55254a(11) =60231a(12) =60663a(13) =79094a(14) =87655a(15) =90181a(16) =90182a(17) =95845a(18) =99655a(19) =103621a(20) =109765a(21) =115591a(22) =120727a(23) =121045a(24) =122151a(25) =122871a(26) =142454a(27) =142806a(28) =152630a(29) =157493