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 A104606 Write the natural numbers in base 2 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal. 15
 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 1, 1, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 1, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 1 10 111 0010 11101 111000... LINKS MATHEMATICA t = Flatten[ IntegerDigits[ Range[660], 2]]; t[[Table[n(n + 1)/2, {n, 105}]]] CROSSREFS Cf. A104607, A104608, A104609, A104610, A104611, A104612, A104613, A091425, A104614, A104615, A104616, A104617, A104618, A104619, A104620. Sequence in context: A091069 A318608 A087003 * A014389 A014349 A014269 Adjacent sequences:  A104603 A104604 A104605 * A104607 A104608 A104609 KEYWORD base,nonn AUTHOR Robert G. Wilson v, Mar 16 2005 STATUS approved

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Last modified December 17 02:30 EST 2018. Contains 318192 sequences. (Running on oeis4.)