A098209 a(n) = A067275(n+1)^2 - 1.

0, 48, 4488, 444888, 44448888, 4444488888, 444444888888, 44444448888888, 4444444488888888, 444444444888888888, 44444444448888888888, 4444444444488888888888, 444444444444888888888888

Offset: 0

Author

Labos Elemer, Oct 20 2004

Keywords

• nonn

Comments

Certain functions of near or generalized repdigits provide interesting digit patterns like e.g: -1+(666666667)^2=444444444888888888.

Crossrefs

Cf. A067275, A096507.

Extensions

Definition corrected by Georg Fischer, Jun 27 2020