A319407 -id:A319407 - cp's OEIS frontend

A319408 a(n) = A319407(n)/2.

1, 5, 2, 10, 23, 11, 4, 20, 45, 97, 46, 22, 51, 23, 8, 40, 89, 189, 90, 194, 399, 195, 92, 44, 101, 217, 102, 46, 107, 47, 16, 80, 177, 373, 178, 378, 775, 379, 180, 388, 797, 1617, 798, 390, 803, 391, 184, 88, 201, 429, 202, 434, 895, 435, 204, 92, 213, 457, 214, 94, 219, 95, 32, 160, 353, 741, 354, 746, 1527, 747

Offset: 1

N. J. A. Sloane, Sep 19 2018

Altug Alkan, Table of n, a(n) for n = 1..16384

Cf. A175046, A319407.

A319409 a(n) = n - A318921(n).

Original entry on oeis.org

0, 1, 2, 2, 4, 5, 5, 4, 8, 9, 10, 10, 10, 12, 11, 8, 16, 17, 18, 18, 20, 21, 21, 20, 20, 23, 25, 24, 22, 26, 23, 16, 32, 33, 34, 34, 36, 37, 37, 36, 40, 41, 42, 42, 42, 44, 43, 40, 40, 45, 48, 46, 50, 52, 51, 48, 44, 51, 55, 52, 46, 54, 47, 32, 64, 65, 66, 66, 68, 69, 69, 68, 72, 73, 74, 74, 74, 76, 75, 72, 80, 81, 82, 82, 84, 85, 85, 84, 84, 87, 89, 88, 86, 90, 87, 80, 80

Offset: 0

N. J. A. Sloane, Sep 19 2018

How much n decreases by when its binary runs are all shortened by one bit.

Rémy Sigrist, Table of n, a(n) for n = 0..16384

Cf. A003714, A175046, A318921, A319407.

a(n) = my (p=-1, d=0, b=1, r=n); while (r, my (l=r%2); if (p!=l, p=l, d+=l*b; b*=2); r\=2); n-d \\ Rémy Sigrist, Sep 25 2018

a(n) = n iff n is a Fibbinary number (A003714). - Rémy Sigrist, Sep 25 2018

cp's OEIS Frontend

A319408 a(n) = A319407(n)/2.

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A319409 a(n) = n - A318921(n).

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