Solutions to x + d(x) = sigma(x)/2, where d(x) is the number of divisors of x.

A290703

Solutions to x + d(x) = sigma(x)/2, where d(x) is the number of divisors of x.

Terms

    a(0) =176a(1) =2205a(2) =7544a(3) =10184a(4) =28544a(5) =503296a(6) =1020568a(7) =2051072a(8) =6019264a(9) =10001848a(10) =15317696a(11) =35019968a(12) =354375344a(13) =535871488a(14) =9175990784a(15) =115917884416

External references