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A128208 Inverse of number triangle A128210. 2
1, 1, 1, 0, 1, 1, 0, 0, 3, 1, 0, 0, 0, 5, 1, 0, 0, 0, 0, 11, 1, 0, 0, 0, 0, 0, 21, 1, 0, 0, 0, 0, 0, 0, 43, 1, 0, 0, 0, 0, 0, 0, 0, 85, 1, 0, 0, 0, 0, 0, 0, 0, 0, 171, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 341, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

0,9

COMMENTS

Sub-diagonal is A001045(n+1). Row sums are A128209.

LINKS

Table of n, a(n) for n=0..65.

EXAMPLE

Triangle begins

1,

1, 1,

0, 1, 1,

0, 0, 3, 1,

0, 0, 0, 5, 1,

0, 0, 0, 0, 11, 1,

0, 0, 0, 0, 0, 21, 1,

0, 0, 0, 0, 0, 0, 43, 1,

0, 0, 0, 0, 0, 0, 0, 85, 1,

0, 0, 0, 0, 0, 0, 0, 0, 171, 1,

0, 0, 0, 0, 0, 0, 0, 0, 0, 341, 1

CROSSREFS

Sequence in context: A058612 A099725 A285118 * A154721 A185664 A300812

Adjacent sequences:  A128205 A128206 A128207 * A128209 A128210 A128211

KEYWORD

nonn,tabl

AUTHOR

Paul Barry, Feb 19 2007

STATUS

approved

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Last modified October 16 23:50 EDT 2019. Contains 328103 sequences. (Running on oeis4.)