Numbers k such that the sum of the nonsquare numbers from 1 to k is a square.

A065992

Numbers k such that the sum of the nonsquare numbers from 1 to k is a square.

Terms

    a(0) =6a(1) =12a(2) =31a(3) =40a(4) =411a(5) =1638a(6) =2352a(7) =9465a(8) =263284a(9) =647498a(10) =1227466a(11) =3179974a(12) =4027111a(13) =5382959a(14) =29444851a(15) =32585267a(16) =50402546a(17) =52610042a(18) =98185445a(19) =3750320631a(20) =14471636075a(21) =79389982446a(22) =157183654414

External references