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A094620 Palindromic sequence whose n-th term digits sum to 2n. 2
0, 11, 22, 141, 242, 1441, 2442, 14441, 24442, 144441, 244442, 1444441, 2444442, 14444441, 24444442, 144444441, 244444442, 1444444441, 2444444442, 14444444441, 24444444442, 144444444441, 244444444442, 1444444444441 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

a(n)=10^(n/2)(11/9+13sqrt(10)/18+(11/9-13sqrt(10)/18)(-1)^n)+(-1)^n/2-53/18; a(n)=(A094621(n)+A094622(n))/2.

CROSSREFS

Sequence in context: A061852 A083511 A067894 * A077431 A118133 A155973

Adjacent sequences:  A094617 A094618 A094619 * A094621 A094622 A094623

KEYWORD

easy,nonn,base

AUTHOR

Paul Barry (pbarry(AT)wit.ie), May 15 2004

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.