A043308 - OEIS

A043308

a(n)=A033002(n)/5.

1, 2, 3, 16, 18, 19, 32, 33, 35, 48, 49, 50, 257, 258, 259, 288, 289, 291, 304, 305, 306, 513, 514, 515, 528, 530, 531, 560, 561, 562, 769, 770, 771, 784, 786, 787, 800, 801, 803, 4112, 4114, 4115, 4128, 4129, 4131, 4144, 4145

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OFFSET

1,2

COMMENTS

Also: Numbers which, written in base 16, have all digits less than 4 and no two adjacent digits equal. - M. F. Hasler, Feb 03 2014

LINKS

Table of n, a(n) for n=1..47.

PROG

(PARI) is_A043308(n)=(n=[n])&&!until(!n[1], ((n=divrem(n[1], 16))[2]<4 && n[1]%4!=n[2])||return) \\ M. F. Hasler, Feb 03 2014

CROSSREFS

Cf. A043307 - A043320, A043291, A033001 - A033014, A033016 - A033029.

Sequence in context: A246490 A248854 A167605 * A061918 A122656 A171458

Adjacent sequences: A043305 A043306 A043307 * A043309 A043310 A043311

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved