login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A171758
Binary expansion of numbers in A171757.
3
10, 100, 1000, 1010, 10000, 10010, 10100, 10110, 100000, 100010, 100100, 100110, 101000, 101010, 101100, 101110, 1000000, 1000010, 1000100, 1000110, 1001000, 1001010, 1001100, 1001110, 1010000, 1010010, 1010100, 1010110, 1011000, 1011010, 1011100, 1011110
OFFSET
1,1
LINKS
FORMULA
a(n) = A007088(A171757(n)). - Amiram Eldar, Sep 01 2020
MATHEMATICA
bin[n_] := FromDigits[IntegerDigits[n, 2]]; bin /@ Select[Range[2, 100, 2], IntegerDigits[#, 2][[1 ;; 2]] == {1, 0} &] (* Amiram Eldar, Sep 01 2020 *)
CROSSREFS
Sequence in context: A055992 A115814 A350215 * A115798 A077439 A136839
KEYWORD
nonn,base
AUTHOR
N. J. A. Sloane, Oct 12 2010
STATUS
approved