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A023714 Numbers with a single 2 in their base 4 expansion. 1
2, 6, 8, 9, 11, 14, 18, 22, 24, 25, 27, 30, 32, 33, 35, 36, 37, 39, 44, 45, 47, 50, 54, 56, 57, 59, 62, 66, 70, 72, 73, 75, 78, 82, 86, 88, 89, 91, 94, 96, 97, 99, 100, 101, 103, 108, 109, 111, 114, 118, 120, 121, 123, 126, 128, 129 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..56.

MATHEMATICA

Select[ Range[ 132 ], (Count[ IntegerDigits[ #, 4 ], 2 ]==1)& ]

CROSSREFS

Sequence in context: A174331 A220116 A043341 * A096507 A288428 A050675

Adjacent sequences:  A023711 A023712 A023713 * A023715 A023716 A023717

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified June 25 04:52 EDT 2021. Contains 345452 sequences. (Running on oeis4.)