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A063475
Sum_{d | H(n)} d^2, where H(n) is the Half-Totient function (A023022).
1
1, 1, 5, 1, 10, 5, 10, 5, 26, 5, 50, 10, 21, 21, 85, 10, 91, 21, 50, 26, 122, 21, 130, 50, 91, 50, 250, 21, 260, 85, 130, 85, 210, 50, 455, 91, 210, 85, 546, 50, 500, 130, 210, 122, 530, 85, 500, 130, 341, 210, 850, 91, 546, 210, 455, 250, 842, 85, 1300, 260, 455, 341
OFFSET
3,3
LINKS
PROG
(PARI) H(n)=eulerphi(n)/2; j=[]; for(n=3, 150, j=concat(j, sumdiv(H(n), d, d^2))); j
(PARI) { for (n=3, 1000, write("b063475.txt", n, " ", sumdiv(eulerphi(n)/2, d, d^2)) ) } \\ Harry J. Smith, Aug 22 2009
CROSSREFS
Cf. A023022.
Sequence in context: A131414 A333448 A050308 * A348689 A329752 A363969
KEYWORD
nonn
AUTHOR
Jason Earls, Jul 27 2001
STATUS
approved