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A104616 Write the natural numbers in base 13 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal. 15
1, 3, 6, 10, 1, 1, 7, 11, 2, 2, 0, 6, 4, 4, 1, 9, 6, 7, 10, 7, 9, 10, 1, 0, 1, 8, 4, 1, 10, 7, 1, 2, 0, 1, 10, 9, 1, 8, 8, 1, 9, 10, 2, 0, 2, 2, 7, 10, 2, 4, 8, 3, 4, 9, 3, 7, 0, 3, 0, 7, 4, 9, 4, 4, 8, 4, 4, 10, 7, 5, 2, 0, 5, 10, 9, 6, 8, 8, 6, 9, 10, 7, 0, 2, 7, 7, 10, 8, 4, 8, 8, 4, 9, 9, 7, 0, 9, 0, 7, 10 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
1
23
456
789A
BC101
112131...
LINKS
MATHEMATICA
t = Flatten[ IntegerDigits[ Range[1900], 13]]; t[[Table[n(n + 1)/2, {n, 100}]]]
CROSSREFS
Sequence in context: A057241 A104617 A104618 * A104614 A133302 A104615
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Mar 16 2005
STATUS
approved

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Last modified March 19 07:31 EDT 2024. Contains 370955 sequences. (Running on oeis4.)