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A033943
Sum of coefficients of a polynomial associated to a family of digraphs.
0
1, 1, 3, 13, 33, 81, 189
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OFFSET
0,3
REFERENCES
Paper in preparation (1998).
LINKS
Table of n, a(n) for n=0..6.
CROSSREFS
Sequence in context:
A166805
A252979
A332366
*
A026084
A211801
A016061
Adjacent sequences:
A033940
A033941
A033942
*
A033944
A033945
A033946
KEYWORD
nonn
AUTHOR
Ottavio D'Antona (dantona(AT)dsi.unimi.it)
STATUS
approved
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Last modified May 9 19:33 EDT 2024. Contains 372354 sequences. (Running on oeis4.)