A303573 a(n) = palindrome arising when A230891(n+1) is formed (if there is more than one, use the smallest).

101, 111, 101, 10001, 101101, 1010101, 1001001, 101101, 1010101, 10011001, 10011001, 10111101, 100111001, 100101001, 10111101, 10111101, 100111001, 1000110001, 1000110001, 1001111001, 1001111001, 1001111001, 1011111101, 1011111101, 10001110001, 10001010001

Offset: 0

Author

N. J. A. Sloane, Apr 27 2018

Keywords

• nonn
• base

Comments

Let A230891(n) = X, A230891(n+1) = Y. The binary digits of X and Y can be rearranged to form a base-2 palindrome, possibly in several ways; a(n) is the smallest such palindrome.

Links

• Rémy Sigrist, Table of n, a(n) for n = 0..29999
• Rémy Sigrist, PARI program for A303573

Crossrefs

Cf. A230891.

Programs

PARI

See Links section.

Extensions

More terms from Rémy Sigrist, Dec 27 2018