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A133081 An interpolation operator, companion to A133080. 3
1, 1, 0, 0, 1, 1, 0, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

A133081 * [1,2,3,...] = A133090: (1, 1, 5, 3, 9, 5, 13, 7, 17,...). A133080: diagonal and subdiagonal are switched.

LINKS

Table of n, a(n) for n=1..45.

FORMULA

Infinite lower triangular matrix, (1,0,1,0,...) in the main diagonal and (1,1,1,...) in the subdiagonal.

EXAMPLE

First few rows of the triangle are:

1;

1, 0;

0, 1, 1;

0, 0, 1, 0;

0, 0, 0, 1, 1;

...

CROSSREFS

Cf. A133080, A133090, A040001 (row sums).

Sequence in context: A151666 A214284 A191747 * A125999 A073784 A219977

Adjacent sequences:  A133078 A133079 A133080 * A133082 A133083 A133084

KEYWORD

nonn,easy,tabl

AUTHOR

Gary W. Adamson, Sep 09 2007

STATUS

approved

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Last modified February 21 15:58 EST 2018. Contains 299414 sequences. (Running on oeis4.)