A382412 Numbers with no zeros in their base-7 representation.

1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26, 27, 29, 30, 31, 32, 33, 34, 36, 37, 38, 39, 40, 41, 43, 44, 45, 46, 47, 48, 57, 58, 59, 60, 61, 62, 64, 65, 66, 67, 68, 69, 71, 72, 73, 74, 75, 76, 78, 79, 80, 81, 82, 83, 85, 86, 87, 88, 89, 90

Offset

1,2

Links

Paolo Xausa, Table of n, a(n) for n = 1..10000

Mathematica

Select[Range[100], DigitCount[#, 7, 0] == 0 &]

Crossrefs

Cf. zeroless numbers in other bases: A126646 (base 2), A032924 (base 3), A023705 (base 4), A023721 (base 5), A248910 (base 6), A255805 (base 8), A255808 (base 9), A052382 (base 10).

Cf. A007093, A043393, A249102, A382413 (complement).

Sequence in context: A187396 A020659 A047304 * A020658 A195178 A043092

Adjacent sequences: A382409 A382410 A382411 * A382413 A382414 A382415

Keyword

nonn,base,easy

Author

Paolo Xausa, Mar 24 2025

Status

approved