A393255 - OEIS

A393255

Indices k where A059261(k)=A393253(k).

0, 1, 4, 5, 12, 16, 17, 20, 21, 28, 49, 64, 65, 68, 69, 76, 80, 81, 84, 85, 92, 113, 197, 200, 256, 257, 260, 261, 268, 272, 273, 276, 277, 284, 305, 320, 321, 324, 325, 332, 336, 337, 340, 341, 348, 369, 453, 456, 789, 792, 801, 1024, 1025, 1028, 1029, 1036

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,3

COMMENTS

k belongs to the sequence if and only if its base-4 representation belongs to (0|1)* or (0|1)*3(01*2)01*.

LINKS

Table of n, a(n) for n=1..56.

CROSSREFS

Cf. A059261, A393253.

Sequence in context: A050022 A137619 A115375 * A212114 A269227 A103650

Adjacent sequences: A393252 A393253 A393254 * A393256 A393257 A393258

KEYWORD

nonn

AUTHOR

Jeffrey Shallit, Feb 07 2026

STATUS

approved