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A104610
Write the natural numbers in base 6 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.
15
1, 3, 1, 1, 4, 1, 2, 3, 1, 0, 1, 1, 1, 1, 1, 3, 1, 1, 0, 2, 2, 4, 2, 3, 2, 3, 3, 0, 4, 4, 5, 5, 5, 5, 1, 1, 0, 3, 1, 2, 3, 2, 1, 1, 2, 4, 3, 5, 4, 4, 1, 1, 5, 3, 2, 5, 3, 1, 2, 2, 2, 0, 4, 1, 0, 5, 2, 3, 0, 1, 3, 0, 1, 3, 3, 3, 4, 0, 4, 1, 0, 1, 4, 4, 3, 3, 2, 5, 3, 0, 5, 5, 2, 4, 2, 0, 4, 5, 4, 0, 1, 1, 1, 4, 1
OFFSET
1,2
COMMENTS
1
23
451
0111
21314
152021...
MATHEMATICA
t = Flatten[ IntegerDigits[ Range[1500], 6]]; t[[Table[n(n + 1)/2, {n, 105}]]]
KEYWORD
base,nonn
AUTHOR
Robert G. Wilson v, Mar 16 2005
STATUS
approved