A082242 Multiples of 4 that are the concatenation of 4 consecutive natural numbers.

3456, 9101112, 13141516, 17181920, 21222324, 25262728, 29303132, 33343536, 37383940, 41424344, 45464748, 49505152, 53545556, 57585960, 61626364, 65666768, 69707172, 73747576, 77787980, 81828384, 85868788, 89909192, 93949596, 979899100, 101102103104

Offset: 1

Author

Amarnath Murthy, Apr 11 2003

Keywords

• base
• easy
• nonn

Comments

Except for the first term all the other terms are a concatenation of 4 numbers from 4k+1 to 4k+4. All the natural numbers are used except 1,2,7 and 8.

Crossrefs

Cf. A082243.

Programs

Mathematica

Select[FromDigits[Flatten[IntegerDigits[#]]]&/@Partition[Range[100],4,1],Mod[#,4]==0&] (* Harvey P. Dale, Jun 16 2023 *)

Extensions

More terms from Harvey P. Dale, Jun 16 2023