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 A025683 Exponent of 9 (value of i) in n-th number of form 9^i*10^j. 1
 0, 1, 0, 2, 1, 0, 3, 2, 1, 0, 4, 3, 2, 1, 0, 5, 4, 3, 2, 1, 0, 6, 5, 4, 3, 2, 1, 0, 7, 6, 5, 4, 3, 2, 1, 0, 8, 7, 6, 5, 4, 3, 2, 1, 0, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,4 LINKS MATHEMATICA Table[Range[n, 0, -1], {n, 0, 15}]//Flatten (* Harvey P. Dale, Jan 20 2022 *) CROSSREFS Differs from A025581 at a(253). Sequence in context: A025581 A025669 A025676 * A025660 A025677 A025651 Adjacent sequences: A025680 A025681 A025682 * A025684 A025685 A025686 KEYWORD nonn AUTHOR STATUS approved

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Last modified December 9 18:21 EST 2022. Contains 358703 sequences. (Running on oeis4.)