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A129979 Left border of triangle A131088. 0
1, 3, 3, 2, 3, 1, 3, 2, 2, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..10.

FORMULA

Inverse Moebius transform of A007427 with changed signs except for A007427(1) = 1; i.e. Inverse Moebius transform of (1, 2, 2, -1, 2, -4, 2, 0, -1, -4,...).

EXAMPLE

A131088 = (1; 3,1; 3,0,1; 2,3,0,1;...). Left column = A131090.

CROSSREFS

Cf. A131088, A131090, A051731, A054525, A007427.

Sequence in context: A014967 A210851 A120992 * A228483 A274709 A260896

Adjacent sequences:  A129976 A129977 A129978 * A129980 A129981 A129982

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Jun 14 2007

STATUS

approved

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Last modified July 22 07:23 EDT 2019. Contains 325216 sequences. (Running on oeis4.)