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A342918 a(n) = (1+n) / A143771(n). 3
1, 1, 1, 5, 1, 7, 1, 3, 5, 11, 1, 13, 1, 5, 2, 17, 1, 19, 1, 7, 11, 23, 1, 25, 13, 9, 7, 29, 1, 31, 1, 11, 17, 35, 3, 37, 1, 13, 5, 41, 1, 43, 1, 15, 23, 47, 1, 49, 25, 17, 13, 53, 1, 55, 7, 19, 29, 59, 1, 61, 1, 21, 8, 65, 11, 67, 1, 23, 35, 71, 1, 73, 1, 25, 19, 77, 13, 79, 1, 27, 41, 83, 1, 85, 43, 29, 11, 89, 1, 91, 23 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..16384

FORMULA

a(n) = (1+n) / A143771(n).

PROG

(PARI)

A143771(n) = my(d = divisors(n)); gcd(vector(#d, k, d[k]+n/d[k])); \\ From A143771.

A342918(n) = ((1+n)/A143771(n));

CROSSREFS

Cf. A143771, A339873.

After n=1 differs from A342916 for the first time at n=44, where a(44) = 15, while A342916(44) = 5.

Sequence in context: A140215 A190643 A068328 * A109375 A051712 A086892

Adjacent sequences:  A342915 A342916 A342917 * A342919 A342920 A342921

KEYWORD

nonn

AUTHOR

Antti Karttunen, Mar 29 2021

STATUS

approved

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Last modified June 15 00:00 EDT 2021. Contains 345041 sequences. (Running on oeis4.)