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A105588 Diagonal sums of a Moebius-binomial triangle. 1
1, 1, 2, 2, 2, 2, 3, 3, 4, 3, 4, 4, 5, 5, 5, 5, 7, 7, 7, 7, 9, 8, 9, 8, 11, 9, 10, 9, 11, 10, 10, 10, 13, 12, 13, 12, 17, 14, 14, 14, 18, 16, 16, 17, 20, 17, 16, 16, 21, 18, 17, 17, 23, 20, 20, 18, 24, 22, 23, 21, 26, 23, 23, 22, 27, 24, 24, 24, 30, 25, 26, 24, 34, 27, 28, 26, 33, 28 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Diagonal sums of A105586.

LINKS

Table of n, a(n) for n=0..77.

FORMULA

a(n)=sum{k=0..floor(n/2), binomial(abs(mu(n-k)), abs(mu(k))}

CROSSREFS

Sequence in context: A134544 A230514 A106161 * A064658 A194292 A308403

Adjacent sequences: A105585 A105586 A105587 * A105589 A105590 A105591

KEYWORD

easy,nonn

AUTHOR

Paul Barry, Apr 14 2005

STATUS

approved

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Last modified January 29 21:02 EST 2023. Contains 359931 sequences. (Running on oeis4.)