OFFSET
0,2
LINKS
Chai Wah Wu, Table of n, a(n) for n = 0..15
PROG
(Python)
from labmath import mobius
def A344038(n): return sum(mobius(k)*(10**n//k)**6 for k in range(1, 10**n+1))
(PARI) a(n)={sum(k=1, 10^n+1, moebius(k)*(10^n\k)^6)} \\ Andrew Howroyd, May 08 2021
CROSSREFS
Related counts of k-tuples:
5-tuples: A343282;
KEYWORD
nonn,less
AUTHOR
Karl-Heinz Hofmann, May 07 2021
EXTENSIONS
Edited by N. J. A. Sloane, Jun 13 2021
STATUS
approved