a(n) is the smallest number that is the sum of n positive 5th powers in two ways.

Terms

a(0) =1375298099a(1) =51445a(2) =4097a(3) =4098a(4) =4099a(5) =4100a(6) =4101a(7) =4102a(8) =4103a(9) =4104a(10) =4105a(11) =4106a(12) =4107a(13) =4108a(14) =4109a(15) =4110a(16) =4111a(17) =4112a(18) =4113a(19) =4114a(20) =4115a(21) =4116a(22) =4117a(23) =4118a(24) =4119a(25) =4120a(26) =4121a(27) =4122a(28) =4123a(29) =4124