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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
Sequence in context: A318608 A087003 A266840 * A189169 A267676 A014389
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Mar 16 2005
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)