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A288528 Numbers with consecutive positive decimal digits after the digits are sorted. 1
1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 21, 23, 32, 34, 43, 45, 54, 56, 65, 67, 76, 78, 87, 89, 98, 123, 132, 213, 231, 234, 243, 312, 321, 324, 342, 345, 354, 423, 432, 435, 453, 456, 465, 534, 543, 546, 564, 567, 576, 645, 654, 657, 675, 678, 687, 756, 765, 768, 786, 789, 798, 867, 876, 879, 897, 978, 987 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The last term is a(462331) = 987654321.

Observation: the number of terms mentioned above is also A014145(9). Also the sum of the 9th row in the triangle A288777.

It appears that the number of terms with k digits in this sequence is also A288777(9,k), k>=1.

LINKS

Table of n, a(n) for n=1..67.

CROSSREFS

Subsequence of A215014.

Supersequence of A138141.

Cf. A014145, A033075, A288777.

Sequence in context: A097569 A308561 A095160 * A200372 A059043 A259236

Adjacent sequences:  A288525 A288526 A288527 * A288529 A288530 A288531

KEYWORD

nonn,base,easy,fini

AUTHOR

Omar E. Pol, Jun 15 2017

STATUS

approved

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Last modified November 18 02:07 EST 2019. Contains 329242 sequences. (Running on oeis4.)