Integers k such that there exists an integer 0<m<k such that (1/sigma(m)^2 + 1/sigma(k)^2)*(m+k)^2 = 1.

A383964

Integers k such that there exists an integer 0<m<k such that (1/sigma(m)^2 + 1/sigma(k)^2)*(m+k)^2 = 1.

Terms

    a(0) =168a(1) =1320a(2) =3792a(3) =4968a(4) =7176a(5) =8184a(6) =14364a(7) =15240a(8) =20076a(9) =29904a(10) =30672a(11) =41952a(12) =48312a(13) =48768a(14) =54264a(15) =56856a(16) =57960a(17) =60144a(18) =64296a(19) =72996a(20) =73344a(21) =83328a(22) =90552a(23) =91512a(24) =99828a(25) =106020a(26) =110952a(27) =113280a(28) =114156a(29) =119016

External references