OFFSET
0,3
LINKS
FORMULA
PROG
(PARI)
up_to = 65537;
A003415(n) = if(n<=1, 0, my(f=factor(n)); n*sum(i=1, #f~, f[i, 2]/f[i, 1]));
A276086(n) = { my(m=1, p=2); while(n, m *= (p^(n%p)); n = n\p; p = nextprime(1+p)); (m); };
A359550(n) = { my(f = factor(n)); prod(k=1, #f~, (f[k, 2]<f[k, 1])); };
A368918list(up_to) = { my(v=vector(up_to), s=A368916(0)); for(i=1, up_to, s +=
A368916(i); v[i] = s); (v); };
v368918 = A368918list(up_to);
A368918(n) = if(!n, 0, v368918[n]);
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Jan 10 2024
STATUS
approved