OFFSET
0,4
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..10000
Nicholas John Bizzell-Browning, LIE scales: Composing with scales of linear intervallic expansion, Ph. D. Thesis, Brunel Univ. (UK, 2024). See p. 39.
Lorenz Halbeisen and Norbert Hungerbuehler, Number theoretic aspects of a combinatorial function, Notes on Number Theory and Discrete Mathematics 5(4) (1999), 138-150; see Definition 7 for the shadow transform.
N. J. A. Sloane, Transforms.
MAPLE
s:= n-> `if`(n=0, 0, numtheory[sigma](n)):
a:= n-> add(`if`(modp(s(j), n)=0, 1, 0), j=0..n-1):
seq(a(n), n=0..120); # Alois P. Heinz, Sep 16 2019
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Aug 02 2002
STATUS
approved