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

Terms

a(0) =3456a(1) =9101112a(2) =13141516a(3) =17181920a(4) =21222324a(5) =25262728a(6) =29303132a(7) =33343536a(8) =37383940a(9) =41424344a(10) =45464748a(11) =49505152a(12) =53545556a(13) =57585960a(14) =61626364a(15) =65666768a(16) =69707172a(17) =73747576a(18) =77787980a(19) =81828384a(20) =85868788a(21) =89909192a(22) =93949596a(23) =979899100a(24) =101102103104