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A359428
Sum of A358764 and its Dirichlet inverse.
2
2, 0, 0, 4, 0, 12, 0, 16, 9, 36, 0, 16, 0, 20, 54, 20, 0, 30, 0, 120, 30, 180, 0, 20, 81, 100, 63, 200, 0, 228, 0, 544, 270, 900, 90, 446, 0, 500, 150, 820, 0, 1660, 0, 3000, 477, 4500, 0, 2760, 25, 2554, 1350, 5000, 0, 7788, 810, 14900, 750, 22500, 0, 936, 0, 28, 2265, -12, 450, 3324, 0, 168, 6750
OFFSET
1,1
FORMULA
a(n) = A358764(n) + A359427(n).
a(1) = 2, and for n > 1, a(n) = -Sum_{d|n, 1<d<n} A358764(d) * A359427(n/d).
PROG
(PARI) A359428(n) = (A358764(n)+A359427(n)); \\ Uses the program given in A359427.
CROSSREFS
Cf. A053850 (positions of odd terms), A353569 (parity of terms).
Cf. also A342419.
Sequence in context: A349359 A323894 A349383 * A354867 A346247 A323412
KEYWORD
sign,base,look
AUTHOR
Antti Karttunen, Jan 02 2023
STATUS
approved