Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).

A063964

Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).

Terms

    a(0) =11a(1) =14a(2) =224a(3) =957a(4) =1334a(5) =1634a(6) =2685a(7) =9347a(8) =13915a(9) =16260a(10) =20145a(11) =20335a(12) =33998a(13) =37236a(14) =42251a(15) =42818a(16) =51624a(17) =55308a(18) =56419a(19) =56975a(20) =71874a(21) =74918a(22) =77748a(23) =79824a(24) =79826a(25) =79833a(26) =84134a(27) =93632a(28) =106600a(29) =111506

External references