OFFSET
0,2
REFERENCES
J. M. Gandhi, On logarithmic numbers, Math. Student, 31 (1963), 73-83.
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
J. M. Gandhi, On logarithmic numbers, Math. Student, 31 (1963), 73-83. [Annotated scanned copy]
FORMULA
E.g.f.: F(x)/x*exp(x) where F(x) is o.g.f. for A000203(). a(n) = Sum_{m=1..n+1} A000203(m)*binomial(n, m-1)*(m-1)!. - Vladeta Jovovic, Feb 08 2003
MAPLE
a:= n-> n!*add(numtheory[sigma](m+1)/(n-m)!, m=0..n):
seq(a(n), n=0..22); # Alois P. Heinz, Sep 16 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
EXTENSIONS
More terms from Jeffrey Shallit
More terms from Vladeta Jovovic, Feb 08 2003
STATUS
approved