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A326187 a(n) = sigma(n) - A003557(n). 3
0, 2, 3, 5, 5, 11, 7, 11, 10, 17, 11, 26, 13, 23, 23, 23, 17, 36, 19, 40, 31, 35, 23, 56, 26, 41, 31, 54, 29, 71, 31, 47, 47, 53, 47, 85, 37, 59, 55, 86, 41, 95, 43, 82, 75, 71, 47, 116, 50, 88, 71, 96, 53, 111, 71, 116, 79, 89, 59, 166, 61, 95, 101, 95, 83, 143, 67, 124, 95, 143, 71, 183, 73, 113, 119, 138, 95, 167, 79 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..20000

FORMULA

a(n) = A000203(n) - A003557(n).

PROG

(PARI)

A003557(n) = { my(f=factor(n)); for (i=1, #f~, f[i, 2] = f[i, 2]-1); factorback(f); }; \\ From A003557

A326187(n) = (sigma(n)-A003557(n));

CROSSREFS

Cf. A000203, A003557, A326188.

Cf. also A326184.

Sequence in context: A265546 A066911 A326229 * A071850 A092749 A152076

Adjacent sequences:  A326184 A326185 A326186 * A326188 A326189 A326190

KEYWORD

nonn

AUTHOR

Antti Karttunen, Jul 11 2019

STATUS

approved

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Last modified November 13 15:41 EST 2019. Contains 329106 sequences. (Running on oeis4.)