A080502 a(1) = 1, a(n) = smallest multiple of n that can be obtained by inserting digits anywhere in a(n-1) if necessary.

1, 10, 102, 1012, 10120, 101202, 1012025, 10120256, 101120256, 1011202560, 10112002560, 10112002560, 101102002560, 1010102002560, 1010102002560, 1010102002560, 10101020025605, 101010200256054, 101010200256054, 1010102002560540, 10101020025605040

Offset

1,2

Links

Table of n, a(n) for n=1..21.

Example

a(4) = 1012 hence a(5)=10120 and a(6) = 101202.

Crossrefs

Cf. A080501, A080503.

Variant of A078283. [From R. J. Mathar, Sep 19 2008]

Sequence in context: A053041 A220491 A088644 * A078283 A045874 A214437

Adjacent sequences: A080499 A080500 A080501 * A080503 A080504 A080505

Keyword

base,nonn

Author

Amarnath Murthy, Mar 19 2003

Extensions

More terms from Sean A. Irvine, Sep 21 2025

Status

approved