A306465 -id:A306465 - cp's OEIS frontend

A306466 Inverse to A306465.

1, 2, 3, 5, 7, 9, 11, 13, 15, 4, 6, 17, 18, 20, 43, 45, 47, 49, 57, 19, 21, 22, 24, 26, 51, 53, 55, 59, 61, 23, 28, 29, 31, 37, 63, 65, 67, 69, 71, 33, 35, 39, 41, 73, 166, 188, 190, 192, 194, 168, 170, 172, 174, 176, 196, 198, 200, 202, 204, 178, 180, 182

Offset: 1

Rémy Sigrist, Feb 17 2019

			A306465(39) = 42, hence a(42) = 39.

Cf. A266196, A306465.

A345358 Lexicographically earliest sequence of distinct nonnegative integers such that the product of two terms, not necessarily distinct, can be computed without carry in base 10.

Original entry on oeis.org

0, 1, 2, 3, 10, 11, 12, 13, 20, 21, 22, 30, 100, 101, 102, 103, 110, 111, 112, 113, 120, 121, 122, 130, 200, 201, 202, 210, 211, 212, 220, 221, 300, 1000, 1001, 1002, 1003, 1010, 1011, 1012, 1013, 1020, 1021, 1022, 1030, 1100, 1101, 1102, 1103, 1110, 1111

Offset: 1

Rémy Sigrist, Jun 16 2021

All terms belong to A007090.

If m is a term, then 10*m is also a term (in particular, all powers of 10 appear in the sequence).

Rémy Sigrist, Table of n, a(n) for n = 1..10000
Rémy Sigrist, PARI program for A345358

Cf. A007090, A007953, A131577 (binary analog), A306465, A345359 (ternary analog).

PARI
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See Links section.
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A007953(a(m) * a(n)) = A007953(a(m)) * A007953(a(n)).

cp's OEIS Frontend

A306466 Inverse to A306465.

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A345358 Lexicographically earliest sequence of distinct nonnegative integers such that the product of two terms, not necessarily distinct, can be computed without carry in base 10.

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