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A089209 Table, read by rows, related to Catalan triangle A033184. 0
1, 2, 1, 3, 2, 1, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 3, 2, 1, 2, 1, 5, 4, 3, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 3, 2, 1, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 3, 2, 1, 2, 1, 6, 5, 4, 3, 2, 1, 5, 4, 3, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 5, 4, 3, 2, 1, 4, 3, 2, 1, 3, 2, 1, 2, 1, 4, 3, 2, 1, 3, 2, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

A033184(n,k) is the number of occurrences of k in the n-th row . There are A000108(n) numbers in the n-th row.

LINKS

Table of n, a(n) for n=1..105.

FORMULA

Let 1->21; 2->321; 3->4321; 4->54321; 5->654321; .... the table is defined by : row 1 :1; row 1->row 2 :2, 1; row 2->row 3 :3, 2, 1, 2, 1; row 3->row 4 :4, 3, 2, 1, 3, 2, 1, 2, 1, 3, 2, 1, 2, 1; ...row n->row n+1.

CROSSREFS

Cf. A000108 A033184.

Sequence in context: A026171 A026176 A026141 * A153359 A240474 A023510

Adjacent sequences:  A089206 A089207 A089208 * A089210 A089211 A089212

KEYWORD

easy,nonn,tabl

AUTHOR

Philippe Deléham, Dec 21 2003

STATUS

approved

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Last modified March 28 19:01 EDT 2020. Contains 333103 sequences. (Running on oeis4.)