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

Author

Rick L. Shepherd, May 22 2006

Keywords

• base
• nonn

Comments

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

Examples

			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.