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A098209
a(n) = A067275(n+1)^2 - 1.
0
0, 48, 4488, 444888, 44448888, 4444488888, 444444888888, 44444448888888, 4444444488888888, 444444444888888888, 44444444448888888888, 4444444444488888888888, 444444444444888888888888
OFFSET
0,2
COMMENTS
Certain functions of near or generalized repdigits provide interesting digit patterns like e.g: -1+(666666667)^2=444444444888888888.
CROSSREFS
Sequence in context: A004034 A134164 A270253 * A208793 A174755 A269419
KEYWORD
nonn
AUTHOR
Labos Elemer, Oct 20 2004
EXTENSIONS
Definition corrected by Georg Fischer, Jun 27 2020
STATUS
approved