A072581 A000040(A072578(n)).

19, 53, 139, 193, 311, 313, 409, 577, 641, 719, 787, 809, 1033, 1061, 1097, 1171, 1193, 1289, 1627, 1637, 1657, 1669, 1693, 1699, 1747, 1811, 1877, 1889, 2083, 2089, 2153, 2161, 2179, 2203, 2213, 2273, 2311, 2659, 2689, 2753, 3169, 3677, 3727, 3733

Offset

1,1

Comments

A000120(a(n))=A023416(A072578(n))=A014499(n).

Links

Table of n, a(n) for n=1..44.

Example

In binary representation 80='1010000' has five 0's and A000040(80)=409='110011001' has five 1's: therefore 409 is a term.

Crossrefs

Cf. A072580, A072582, A072439, A072584.

Sequence in context: A194431 A024848 A240136 * A242797 A142072 A221594

Adjacent sequences: A072578 A072579 A072580 * A072582 A072583 A072584

Keyword

nonn

Author

Reinhard Zumkeller, Jun 23 2002

Status

approved