Primes p such that p+1, p+2, p+3 and p+4 have equal number of divisors.

Terms

a(0) =241a(1) =13781a(2) =19141a(3) =21493a(4) =50581a(5) =61141a(6) =76261a(7) =77431a(8) =94261a(9) =95383a(10) =95413a(11) =98101a(12) =104743a(13) =104869a(14) =134581a(15) =141653a(16) =142453a(17) =152629a(18) =153991a(19) =158341a(20) =160933a(21) =165541a(22) =169111a(23) =199831a(24) =201511a(25) =203431a(26) =206551a(27) =229351a(28) =233941a(29) =235111