A160856 a(1)=1. a(n) = the smallest integer > a(n-1) such that a(n) written in binary contains binary n as a substring, and such that (for n>=2) each value a(k)-a(k-1), for 2<=k<=n, is unique.

1, 4, 6, 12, 20, 24, 29, 40, 50, 74, 86, 99, 106, 115, 143, 160, 196, 210, 230, 276, 298, 342, 367, 385, 400, 416, 435, 456, 479, 505, 543, 576, 644, 674, 711, 740, 805, 844, 871, 928, 978, 1066, 1111, 1196, 1243, 1326, 1374, 1408, 1457, 1508, 1587, 1640

Offset

1,2

Comments

For n >= 2, a(n)-a(n-1) = A160855(n).

Links

Table of n, a(n) for n=1..52.

Crossrefs

Cf. A160855.

Sequence in context: A045956 A057339 A336552 * A019445 A119638 A178547

Adjacent sequences: A160853 A160854 A160855 * A160857 A160858 A160859

Keyword

nonn,base

Author

Leroy Quet, May 28 2009

Extensions

Extended by Ray Chandler, Jun 15 2009

Status

approved