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A083453
a(n) = (concatenation of numbers from n to 1) - n^n.
1
0, 17, 294, 4065, 51196, 607665, 6830778, 70877105, 600233832, 987654321, 825675983710, 112194887206065, 12818235881062068, 1402009104162096305, 150975227220606794946, 16132966377037278102705
OFFSET
1,2
COMMENTS
For n = 76 we get a negative number. - Stefan Steinerberger, Jun 05 2007
LINKS
EXAMPLE
a(4) = 4321 - 256 = 4065.
MATHEMATICA
a = {}; For[n = 1, n < 20, n++, AppendTo[a, FromDigits[Flatten[Table[IntegerDigits[n - i], {i, 0, n - 1}]]] - n^n]]; a (* Stefan Steinerberger, Jun 05 2007 *)
Table[FromDigits[Flatten[IntegerDigits/@Reverse[Range[n]]]]-n^n, {n, 20}] (* Harvey P. Dale, May 07 2019 *)
CROSSREFS
Sequence in context: A186000 A222572 A163049 * A090437 A007805 A158585
KEYWORD
base,sign
AUTHOR
Amarnath Murthy and Meenakshi Srikanth (menakan_s(AT)yahoo.com), May 01 2003
EXTENSIONS
More terms from Stefan Steinerberger, Jun 05 2007
STATUS
approved