A062033 Binary expansion of n does not contain 1-bits at even positions. Integers whose base 4 representation consists of only 0's and 2s.

0, 10, 1000, 1010, 100000, 100010, 101000, 101010, 10000000, 10000010, 10001000, 10001010, 10100000, 10100010, 10101000, 10101010, 1000000000, 1000000010, 1000001000, 1000001010, 1000100000, 1000100010, 1000101000, 1000101010, 1010000000, 1010000010, 1010001000

Offset

0,2

Links

Table of n, a(n) for n=0..26.

Prog

(Python)
def A062033(n): return int(bin(int(bin(n)[2:], 4))[2:])*10 # Chai Wah Wu, Aug 21 2023

Crossrefs

Decimal representation is given in A062880.

Sequence in context: A168520 A200993 A365704 * A171500 A154027 A013715

Adjacent sequences: A062030 A062031 A062032 * A062034 A062035 A062036

Keyword

nonn,base

Author

Antti Karttunen, Jun 26 2001

Extensions

More terms from Chai Wah Wu, Aug 22 2023

Status

approved