A119426 Concatenation of 3 or more numbers in arithmetic progression with positive common difference.

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

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: A031509 A351479 A247616 * A138059 A302459 A179127

Adjacent sequences: A119423 A119424 A119425 * A119427 A119428 A119429

Keyword

base,nonn

Author

Rick L. Shepherd, May 22 2006

Status

approved