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A104614
Write the natural numbers in base 11 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, 8, 1, 2, 3, 5, 0, 4, 5, 10, 7, 7, 8, 1, 0, 1, 0, 1, 1, 2, 1, 1, 5, 1, 1, 8, 1, 1, 0, 2, 2, 3, 2, 2, 6, 2, 2, 10, 3, 3, 3, 3, 3, 8, 3, 4, 1, 4, 4, 6, 4, 4, 0, 5, 5, 6, 5, 5, 1, 6, 6, 7, 6, 7, 2, 7, 7, 8, 8, 8, 4, 8, 8, 0, 9, 9, 8, 9, 10, 4, 10, 10, 2, 1, 5, 0, 0, 0, 1, 9, 0, 1, 0, 2, 2, 7, 1
OFFSET
1,2
COMMENTS
1
23
456
789A
10111
213141
5161718...
MATHEMATICA
t = Flatten[ IntegerDigits[ Range[1850], 11]]; t[[Table[n(n + 1)/2, {n, 105}]]]
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Mar 16 2005
STATUS
approved