A162843 Let b(n) be the n-th positive integer that is a palindrome in base 2. a(n) = the smallest multiple of b(n) that is > b(n) and that is also a palindrome in binary.

3, 9, 15, 21, 27, 45, 51, 63, 189, 93, 99, 495, 153, 189, 195, 219, 255, 1023, 297, 13803, 6307, 381, 387, 765, 495, 2457, 585, 1533, 693, 765, 771, 819, 891, 20345, 975, 1023, 20805, 4953, 1161, 2015, 69601, 25251, 1365, 157785, 19305, 1533, 1539, 2805

Offset

1,1

Links

Sean A. Irvine and Chai Wah Wu, Table of n, a(n) for n = 1..10000 (a(n) for n = 1..100 from Sean A. Irvine)

Crossrefs

Cf. A162844.

Sequence in context: A016945 A222640 A110108 * A102954 A272749 A273560

Adjacent sequences: A162840 A162841 A162842 * A162844 A162845 A162846

Keyword

base,nonn

Author

Leroy Quet, Jul 14 2009

Extensions

More terms from Sean A. Irvine, Nov 22 2010

Status

approved