Concatenate the consecutive increasing numbers starting with Harshad(n) and ending with Harshad(n+1).

A112131

Concatenate the consecutive increasing numbers starting with Harshad(n) and ending with Harshad(n+1).

Terms

    a(0) =12a(1) =23a(2) =34a(3) =45a(4) =56a(5) =67a(6) =78a(7) =89a(8) =910a(9) =101112a(11) =181920a(12) =2021a(13) =21222324a(14) =24252627a(15) =27282930a(17) =3637383940a(18) =404142a(19) =42434445a(20) =45464748a(21) =484950a(22) =5051525354a(24) =60616263a(26) =707172

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