A127424 - OEIS

A127424

Numbers whose decimal expansion is a concatenation of 3 consecutive decreasing numbers.

210, 321, 432, 543, 654, 765, 876, 987, 1098, 11109, 121110, 131211, 141312, 151413, 161514, 171615, 181716, 191817, 201918, 212019, 222120, 232221, 242322, 252423, 262524, 272625, 282726, 292827, 302928, 313029, 323130, 333231, 343332, 353433, 363534

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OFFSET

1,1

LINKS

Table of n, a(n) for n=1..35.

EXAMPLE

a(13)=141312 because 14 and 13 and 12 are three consecutive decreasing numbers

MATHEMATICA

Table[FromDigits[Flatten[IntegerDigits[#]&/@Range[n, n-2, -1]]], {n, 2, 40}] (* Harvey P. Dale, Nov 28 2013 *)

CROSSREFS

Cf. A127421-A127424.

Sequence in context: A116200 A125011 A119427 * A074159 A033993 A350373