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A104612
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Write the natural numbers in base 8 in a triangle with k digits in the k-th row, as shown below. Sequence gives the leading diagonal.
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15
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1, 3, 6, 1, 3, 6, 2, 2, 2, 7, 4, 5, 1, 0, 1, 0, 1, 1, 2, 1, 1, 5, 1, 1, 0, 2, 2, 3, 2, 2, 7, 3, 3, 3, 3, 3, 0, 4, 4, 5, 4, 5, 2, 5, 5, 0, 6, 6, 6, 7, 7, 4, 7, 0, 1, 1, 0, 5, 1, 3, 2, 1, 1, 1, 2, 2, 1, 3, 5, 3, 1, 1, 4, 7, 3, 5, 0, 6, 1, 1, 7, 4, 7, 1, 3, 0, 2, 2, 1, 1, 5, 7, 6, 3, 2, 2, 4, 6, 4, 0, 1, 6, 2, 2, 0
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OFFSET
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1,2
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COMMENTS
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1
23
456
7101
11213
141516...
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LINKS
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MATHEMATICA
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t = Flatten[ IntegerDigits[ Range[1750], 8]]; t[[Table[n(n + 1)/2, {n, 105}]]]
TakeList[Flatten[IntegerDigits[Range[3000], 8]], Range[150]][[All, -1]] (* Harvey P. Dale, Nov 06 2022 *)
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CROSSREFS
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Cf. A104606, A104607, A104608, A104609, A104610, A104611, A104613, A091425, A104614, A104615, A104616, A104617, A104618, A104619, A104620.
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KEYWORD
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base,nonn
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AUTHOR
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STATUS
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approved
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