a(n) begins the first run of at least n consecutive numbers with the same number of bi-unitary divisors.

A304463

a(n) begins the first run of at least n consecutive numbers with the same number of bi-unitary divisors.

Terms

    a(0) =1a(1) =2a(2) =2a(3) =2a(4) =91a(5) =6850a(6) =6850a(7) =10281a(8) =108771a(9) =171890a(10) =3760204a(11) =3760204a(12) =727940626a(13) =5704384304a(14) =13264434091a(15) =13264434091a(16) =63719307522a(17) =287480681209a(18) =607635436331

External references