A303572 a(n) = palindrome arising when A228410(n+1) is formed (if there is more than one, use the smallest).

101, 10001, 10101, 121, 212, 1221, 12021, 20102, 10201, 12021, 232, 313, 1331, 13031, 30103, 10301, 13031, 343, 414, 1441, 14041, 40104, 14041, 14241, 2442, 12421, 12321, 2332, 13231, 13431, 3443, 13431, 13531, 535, 515, 1551, 15051, 50105, 15051, 15251, 2552, 12521

Offset: 0

Author

N. J. A. Sloane, Apr 27 2018

Keywords

• nonn
• base

Comments

Let A228410(n) = X, A228410(n+1) = Y. The digits of X and Y can be rearranged to form a palindrome, possibly in several ways; a(n) is the smallest such palindrome.

Numbers with an even number of digits without a digit 0 are in A113585. - David A. Corneth, Apr 28 2018

Links

• David A. Corneth, Table of n, a(n) for n = 0..999

Crossrefs

Cf. A113585, A228410.

Extensions

More terms by David A. Corneth, Apr 27 2018