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A119426 Concatenation of 3 or more numbers in arithmetic progression with positive common difference. 1
123, 135, 147, 159, 234, 246, 258, 345, 357, 369, 456, 468, 567, 579, 678, 789, 1234, 1357, 1611, 1713, 1815, 1917, 2345, 2468, 2610, 2712, 2814, 2916, 3456, 3579, 3711, 3813, 3915, 4567, 4710, 4812, 4914, 5678, 5811, 5913, 6789, 6810, 6912, 7911, 8910 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

Leading zeros are not permitted. This sequence, A119427 and the three-digit and larger terms of A010785 are subsequences of A034840.

LINKS

Table of n, a(n) for n=0..44.

EXAMPLE

159 is the concatenation of 1, 5 and 9, which have common difference (c.d.) 4.

The term 12345, the concatenation of 1, 2, 3, 4 and 5 (c.d. 1), is also the concatenation of 1, 23 and 45 (with c.d. 22).

CROSSREFS

Cf. A119427, A010785, A034840.

Sequence in context: A077378 A031509 A247616 * A138059 A302459 A179127

Adjacent sequences:  A119423 A119424 A119425 * A119427 A119428 A119429

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd, May 22 2006

STATUS

approved

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Last modified June 25 22:16 EDT 2019. Contains 324358 sequences. (Running on oeis4.)