OFFSET
0,4
COMMENTS
See comments in A122835.
REFERENCES
J. Munkres, Topology, Prentice Hall, (2000), p. 76.
MATHEMATICA
a122835[n_] := (3/4)*(PolyLog[-n, 1/2] + Boole[n == 0]) - 1/2;
a[n_] := A000798[[n + 1]] - a122835[n];
CROSSREFS
KEYWORD
hard,nice,nonn
AUTHOR
Nathan K. McGregor (mcgregnk(AT)ese.wustl.edu), Sep 15 2006
EXTENSIONS
a(13) corrected and a(16)-a(18) by Jean-François Alcover, Jan 01 2020
STATUS
approved