Numbers m such that tau(m) = tau(m + 1) - 1 = tau(m + 2), where tau(k) = the number of divisors of k (A000005).

A339776

Numbers m such that tau(m) = tau(m + 1) - 1 = tau(m + 2), where tau(k) = the number of divisors of k (A000005).

Terms

    a(0) =3a(1) =252003a(2) =293763a(3) =770883a(4) =1444803a(5) =2630883a(6) =6543363a(7) =8421603a(8) =9375843a(9) =18992163a(10) =19731363a(11) =21883683a(12) =22108803a(13) =25786083a(14) =25989603a(15) =32512803a(16) =35259843a(17) =48972003a(18) =98049603a(19) =101566083a(20) =132204003a(21) =155201763a(22) =160224963a(23) =162766563a(24) =187197123a(25) =208455843a(26) =291658083

External references