A165406 -id:A165406 - cp's OEIS frontend

A163901 The positions i where A163355(i) = i, that is, the fixed points of permutation A163355.

0, 1, 16, 20, 21, 256, 260, 261, 320, 321, 336, 340, 341, 4096, 4100, 4101, 4160, 4161, 4176, 4180, 4181, 5120, 5121, 5136, 5140, 5141, 5376, 5380, 5381, 5440, 5441, 5456, 5460, 5461, 65536, 65540, 65541, 65600, 65601, 65616, 65620, 65621

Offset: 0

Antti Karttunen, Sep 19 2009

nonn

Alternatively, the positions of zeros in A163900.

a(n) = A000695(A165404(n)). Same sequence in base-4: A165406. See also A163902, A163903, A163910.

A165404 The positions of zeros in the top row of A163898 (and A163899).

Original entry on oeis.org

0, 1, 4, 6, 7, 16, 18, 19, 24, 25, 28, 30, 31, 64, 66, 67, 72, 73, 76, 78, 79, 96, 97, 100, 102, 103, 112, 114, 115, 120, 121, 124, 126, 127, 256, 258, 259, 264, 265, 268, 270, 271, 288, 289, 292, 294, 295, 304, 306, 307, 312, 313, 316, 318, 319, 384, 385, 388

Offset: 0

Antti Karttunen, Sep 19 2009

nonn

Equivalently, the positions of ones in the top row of A163904.

A. Karttunen, Table of n, a(n) for n = 0..609

a(n) = A025581(A165403(n)). Same sequence in binary: A165406. For n>0, A147600(n-1) seems to give the number of terms with binary width n. See also A163901.

cp's OEIS Frontend

A163901 The positions i where A163355(i) = i, that is, the fixed points of permutation A163355.

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