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A094623 Sequence whose n-th term digits sum to n. 3
0, 1, 11, 21, 121, 221, 1221, 2221, 12221, 22221, 122221, 222221, 1222221, 2222221, 12222221, 22222221, 122222221, 222222221, 1222222221, 2222222221, 12222222221, 22222222221, 122222222221, 222222222221, 1222222222221 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

n-th term digits are reversals of A094624(n).

LINKS

Table of n, a(n) for n=0..24.

FORMULA

G.f. : x(1+10x)/((1-x)(1-10x^2)); a(n)=10^(n/2)/2(11/9+2sqrt(10)/9-(2sqrt(10)/9-11/9)(-1)^n)-11/9.

CROSSREFS

Cf. A094625, A094626.

Sequence in context: A126299 A166707 A116525 * A034922 A015446 A083177

Adjacent sequences:  A094620 A094621 A094622 * A094624 A094625 A094626

KEYWORD

easy,nonn,base

AUTHOR

Paul Barry, May 15 2004

STATUS

approved

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Last modified May 20 05:07 EDT 2013. Contains 225448 sequences.