Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).

A225882

Numbers k such that core(k) is equal to the sum of the proper square divisors of k, where core(k) = A007913(k).

Terms

    a(0) =20a(1) =90a(2) =336a(3) =650a(4) =5440a(5) =7371a(6) =13000a(7) =14762a(8) =28730a(9) =30240a(10) =83810a(11) =87296a(12) =130682a(13) =147420a(14) =218400a(15) =280370a(16) =295240a(17) =406875a(18) =708122a(19) =924482a(20) =1397760a(21) =1875530a(22) =2613640a(23) =3536000a(24) =4881890a(25) =4960032a(26) =5884851a(27) =7856640a(28) =7893290a(29) =8137500

External references