cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A097856 Base 10 numbers that are palindromic in bases 2 and 4.

Original entry on oeis.org

0, 1, 3, 5, 15, 17, 21, 51, 63, 65, 85, 195, 255, 257, 273, 325, 341, 771, 819, 975, 1023, 1025, 1105, 1285, 1365, 3075, 3315, 3855, 4095, 4097, 4161, 4369, 4433, 5125, 5189, 5397, 5461, 12291, 12483, 13107, 13299, 15375, 15567, 16191, 16383, 16385, 16705
Offset: 1

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Author

Cino Hilliard, Aug 31 2004

Keywords

Comments

Intersection of A014192 and A006995. - Michel Marcus, Oct 11 2014

Examples

			255 base 2 = 11111111 and 255 base 4 = 3333.
		

Crossrefs

Cf. A014192 (base 4), A006995 (base 2).