Voozh

A080433

a(1) = 2; for n>1, a(n) = smallest multiple of n beginning with the least significant digit of a(n-1) > n and not divisible by 10 if n is not of the type 10k; otherwise a(n) ends in 0 and a(n+1) begins with the first nonzero digit from the right(LSD) of a(n).

2, 22, 24, 44, 45, 54, 49, 96, 63, 30, 33, 36, 65, 56, 615, 512, 221, 108, 817, 700, 714, 44, 46, 624, 425, 52, 216

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OFFSET

1,1

COMMENTS

Why is a(3) = 24 (instead of 21), why is a(7) = 49 (instead of 42), why is a(17) = 221 (instead of 204)? - Sean A. Irvine, Sep 22 2025

LINKS

Table of n, a(n) for n=1..27.

EXAMPLE

a(9) = 63, a(10) = 30 and a(11) = 33 (begins with 3); a(20) = 700 and a(21) = 714.

CROSSREFS

Sequence in context: A153826 A080283 A228112 * A022373 A393717 A111751