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A171782 Binary expansion of numbers in A171781. 2
10, 11, 100, 111, 1000, 1010, 1101, 1111, 10000, 10010, 10100, 10110, 11001, 11011, 11101, 11111, 100000, 100010, 100100, 100110, 101000, 101010, 101100, 101110, 110001, 110011, 110101, 110111, 111001, 111011, 111101, 111111, 1000000, 1000010, 1000100, 1000110 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

FORMULA

a(n) = A007088(A171781(n)). - Amiram Eldar, Sep 01 2020

MATHEMATICA

bin[n_] := FromDigits[IntegerDigits[n, 2]]; bin /@ Select[Range[2, 70], (d = IntegerDigits[#, 2])[[2]] == d[[-1]] &] (* Amiram Eldar, Sep 01 2020 *)

CROSSREFS

Cf. A007088, A171781.

Sequence in context: A108779 A288336 A288805 * A038313 A066330 A348109

Adjacent sequences: A171779 A171780 A171781 * A171783 A171784 A171785

KEYWORD

nonn,base

AUTHOR

N. J. A. Sloane, Oct 12 2010

STATUS

approved

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Last modified December 6 12:26 EST 2022. Contains 358634 sequences. (Running on oeis4.)