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A366873
a(n) = A113415(A163511(n)), where A113415(n) is the average of number of and sum of odd divisors of n.
4
1, 1, 1, 3, 1, 8, 3, 4, 1, 22, 8, 17, 3, 14, 4, 5, 1, 63, 22, 80, 8, 65, 17, 30, 3, 42, 14, 26, 4, 18, 5, 7, 1, 185, 63, 393, 22, 316, 80, 202, 8, 206, 65, 174, 17, 117, 30, 68, 3, 124, 42, 127, 14, 100, 26, 50, 4, 55, 18, 38, 5, 26, 7, 8, 1, 550, 185, 1956, 63, 1567, 393, 1403, 22, 1020, 316, 1204, 80, 804, 202
OFFSET
0,4
LINKS
FORMULA
a(n) = (1/2) * (A324186(n)+A366797(n)).
PROG
(PARI)
A113415(n) = if(n<1, 0, sumdiv(n, d, if(d%2, (d+1)/2)));
A163511(n) = if(!n, 1, my(p=2, t=1); while(n>1, if(!(n%2), (t*=p), p=nextprime(1+p)); n >>= 1); (t*p));
CROSSREFS
Cf. A113415, A163511, A366874 (rgs-transform).
Cf. also A324186, A366797, A366875.
Sequence in context: A207609 A322428 A130300 * A345656 A308742 A065451
KEYWORD
nonn
AUTHOR
Antti Karttunen, Oct 27 2023
STATUS
approved