a(n) is the smallest number which can be represented as the sum of n distinct nonzero fourth powers in exactly 2 ways, or -1 if no such number exists.

A374579

a(n) is the smallest number which can be represented as the sum of n distinct nonzero fourth powers in exactly 2 ways, or -1 if no such number exists.

Terms

    a(0) =-1a(1) =635318657a(2) =6578a(3) =6834a(4) =7459a(5) =8755a(6) =18755a(7) =23412a(8) =43893a(9) =53893a(10) =92309a(11) =123335a(12) =182566a(13) =232647a(14) =298183a(15) =393848a(16) =521849a(17) =681849a(18) =872105a(19) =1066586a(20) =1343612a(21) =1623453a(22) =1955229a(23) =2412205a(24) =2811596a(25) =3424941a(26) =4132222

External references