A154474 a(n) = A007088(A154473(n))

1101001010, 10101101010010, 11001110010010, 1011011100100010, 1110111001000010, 1101110010001110111001000100, 10111001001101110010011101110010001000

Offset

0,1

Comments

This sequence gives the parenthesis expressions shown at the upper right corner image of the page 103 of NKS, with left brackets (black squares) converted to 1's and right brackets (white squares) converted to 0's. Compare to A080070, A122242, A122245.

Links

Table of n, a(n) for n=0..6.

S. Wolfram, A New Kind of Science, Wolfram Media Inc., (2002), p. 102, p. 103 and pages 104, 896-898.

Crossrefs

Sequence in context: A219319 A108322 A108323 * A096553 A104924 A272029

Adjacent sequences: A154471 A154472 A154473 * A154475 A154476 A154477

Keyword

nonn,base

Author

Antti Karttunen, Jan 11 2009

Status

approved