Decimal concatenation of the 5 numbers n,n+1,n+2,n+3,n+4.

Terms

a(0) =12345a(1) =23456a(2) =34567a(3) =45678a(4) =56789a(5) =678910a(6) =7891011a(7) =89101112a(8) =910111213a(9) =1011121314a(10) =1112131415a(11) =1213141516a(12) =1314151617a(13) =1415161718a(14) =1516171819a(15) =1617181920a(16) =1718192021a(17) =1819202122a(18) =1920212223a(19) =2021222324a(20) =2122232425a(21) =2223242526a(22) =2324252627a(23) =2425262728a(24) =2526272829