Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+9.

A116348

Numbers k such that k*(k+1) gives the concatenation of two numbers m and m+9.

Terms

    a(0) =10a(1) =90a(2) =3678a(3) =6322a(4) =8788a(5) =48745a(6) =51255a(7) =87619a(8) =3762556a(9) =6237444a(10) =9217102a(11) =3266298276a(12) =3520463766a(13) =6479536234a(14) =6733701724a(15) =8063694650a(16) =8317860140

External references