Numbers k such that k, k+1, k+2 and k+3 have the same number of divisors.

Terms

a(0) =242a(1) =3655a(2) =4503a(3) =5943a(4) =6853a(5) =7256a(6) =8392a(7) =9367a(8) =10983a(9) =11605a(10) =11606a(11) =12565a(12) =12855a(13) =12856a(14) =12872a(15) =13255a(16) =13782a(17) =13783a(18) =14312a(19) =16133a(20) =17095a(21) =18469a(22) =19045a(23) =19142a(24) =19143a(25) =19940a(26) =20165a(27) =20965a(28) =21368a(29) =21494