A318514 - OEIS

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A318514

a(n) = n OR (greatest proper divisor of n).

3

1, 3, 3, 6, 5, 7, 7, 12, 11, 15, 11, 14, 13, 15, 15, 24, 17, 27, 19, 30, 23, 31, 23, 28, 29, 31, 27, 30, 29, 31, 31, 48, 43, 51, 39, 54, 37, 55, 47, 60, 41, 63, 43, 62, 47, 63, 47, 56, 55, 59, 51, 62, 53, 63, 63, 60, 59, 63, 59, 62, 61, 63, 63, 96, 77, 99, 67, 102, 87, 103, 71, 108, 73, 111, 91, 110, 79, 111, 79, 120, 91, 123, 83, 126

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OFFSET

1,2

LINKS

Antti Karttunen, Table of n, a(n) for n = 1..65537

Index entries for sequences related to binary expansion of n

FORMULA

a(n) = A003986(n, A032742(n)).

a(n) = n + A032742(n) - A318515(n).

PROG

(PARI)

A032742(n) = if(1==n, n, n/vecmin(factor(n)[, 1]));

A318514(n) = bitor(n, A032742(n));

CROSSREFS

Cf. A003986, A032742, A106409, A318506, A318515, A318516.

Sequence in context: A180681 A286102 A023822 * A355413 A369857 A071047

Adjacent sequences: A318511 A318512 A318513 * A318515 A318516 A318517

KEYWORD

nonn,base

AUTHOR

Antti Karttunen, Aug 28 2018

STATUS

approved