A023699 - OEIS

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A023699

Numbers with a single 2 in their ternary expansion.

4

2, 5, 6, 7, 11, 14, 15, 16, 18, 19, 21, 22, 29, 32, 33, 34, 38, 41, 42, 43, 45, 46, 48, 49, 54, 55, 57, 58, 63, 64, 66, 67, 83, 86, 87, 88, 92, 95, 96, 97, 99, 100, 102, 103, 110, 113, 114, 115, 119, 122, 123, 124, 126, 127, 129, 130, 135, 136, 138, 139, 144, 145

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Amiram Eldar, Table of n, a(n) for n = 1..10000

MATHEMATICA

Select[ Range[ 162 ], (Count[ IntegerDigits[ #, 3 ], 2 ]==1)& ]

Select[Range[200], DigitCount[#, 3, 2]==1&] (* Harvey P. Dale, Jul 26 2023 *)

CROSSREFS

Cf. A007089, A023693, A291907.

Sequence in context: A283476 A059791 A043329 * A058605 A282183 A103025

Adjacent sequences: A023696 A023697 A023698 * A023700 A023701 A023702

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved