A091678 In base 4, numbers n of the form k + reverse(k) for at least one k.

0, 2, 4, 5, 6, 10, 15, 17, 20, 25, 30, 33, 34, 41, 42, 50, 51, 58, 59, 65, 67, 68, 75, 76, 84, 85, 92, 93, 101, 102, 105, 109, 110, 118, 125, 126, 130, 145, 150, 165, 170, 185, 190, 195, 210, 215, 230, 235, 250, 255, 257, 260, 275, 280, 289, 295, 300, 315, 320, 321

Offset

0,2

Comments

Base-4 analog of A067030. Complement of A091679.

Links

Table of n, a(n) for n=0..59.

Example

25 is a term since 25 (decimal) = 121 = 110 + 011 = 20 (decimal) + 5 (decimal).

Crossrefs

Cf. A035524, A091679, A067030.

Sequence in context: A039036 A219046 A043045 * A080053 A101964 A294812

Adjacent sequences: A091675 A091676 A091677 * A091679 A091680 A091681

Keyword

base,easy,nonn

Author

Klaus Brockhaus, Jan 28 2004

Status

approved