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A105814 n^2 + (n concatenated with n). +0
1
12, 26, 42, 60, 80, 102, 126, 152, 180, 1110, 1232, 1356, 1482, 1610, 1740, 1872, 2006, 2142, 2280, 2420, 2562, 2706, 2852, 3000, 3150, 3302, 3456, 3612, 3770, 3930, 4092, 4256, 4422, 4590, 4760, 4932, 5106, 5282, 5460, 5640, 5822, 6006, 6192, 6380, 6570 (list; graph; listen)
OFFSET

12,1

EXAMPLE

(1)+(11)=12 (4)+(22)=26 (9)+(33)=42 (16)+(44)=60 ... (100)+(1010)=1110.

MATHEMATICA

f[n_] := Block[{id = IntegerDigits[n]}, n^2 + FromDigits[ Join[id, id]]]; Table[ f[n], {n, 45}] (from Robert G. Wilson v (rgwv(AT)rgwv.com), May 10 2005)

CROSSREFS

Sequence in context: A075689 A054303 A119412 this_sequence A030736 A003346 A047723

Adjacent sequences: A105811 A105812 A105813 this_sequence A105815 A105816 A105817

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini (eric.angelini(AT)kntv.be), May 05 2005

EXTENSIONS

More terms from Robert G. Wilson v (rgwv(AT)rgwv.com), May 10 2005

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Last modified July 26 23:19 EDT 2008. Contains 142293 sequences.


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