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A094624 Sequence whose n-th term digits sum to n. 3
0, 1, 11, 12, 121, 122, 1221, 1222, 12221, 12222, 122221, 122222, 1222221, 1222222, 12222221, 12222222, 122222221, 122222222, 1222222221, 1222222222, 12222222221, 12222222222, 122222222221, 122222222222, 1222222222221 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

COMMENTS

n-th term digits are reversals of A094623(n).

FORMULA

a(n)=10^(n/2)(11/18+11sqrt(10)/180-(11sqrt(10)/180-11/18)(-1)^n)-13/18-(-1)^n/2

CROSSREFS

Cf. A094625, A094626.

Sequence in context: A110380 A164854 A033047 * A108218 A038326 A041059

Adjacent sequences:  A094621 A094622 A094623 * A094625 A094626 A094627

KEYWORD

easy,nonn,base

AUTHOR

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

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Last modified February 16 04:47 EST 2012. Contains 205860 sequences.