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

A374287

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

Terms

    a(0) =-1a(1) =65a(2) =62a(3) =90a(4) =103a(5) =136a(6) =200a(7) =276a(8) =376a(9) =481a(10) =625a(11) =806a(12) =975a(13) =1183a(14) =1415a(15) =1688a(16) =1989a(17) =2325a(18) =2698a(19) =3110a(20) =3563a(21) =4059a(22) =4600a(23) =5188a(24) =5825a(25) =6513a(26) =7254a(27) =8050a(28) =8903a(29) =9815

External references