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A324872
a(n) = A001222(n) + A061395(n) - A324861(n).
4
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 1, 1, 1, 1, 1, 1, 1
OFFSET
1,50
COMMENTS
Records 0, 1, 2, 6, 7, 10, 14, etc., occur at n = 1, 2, 50, 125, 243, 1729, 8192, etc.
FORMULA
a(n) = A001222(n) + A061395(n) - A324861(n).
a(n) = 1 + A252464(n) - A324861(n).
a(p) = 1 for all primes p.
PROG
(PARI)
A061395(n) = if(1==n, 0, primepi(vecmax(factor(n)[, 1])));
A324861(n) = #binary(A324876(n)); \\ Needs also code from A324876.
A324872(n) = (bigomega(n)+A061395(n)-A324861(n));
CROSSREFS
KEYWORD
nonn
AUTHOR
Antti Karttunen, Mar 21 2019
STATUS
approved