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A023716 Numbers with exactly 3 2's in base 4 expansion. 0
42, 106, 138, 154, 162, 166, 168, 169, 171, 174, 186, 234, 298, 362, 394, 410, 418, 422, 424, 425, 427, 430, 442, 490, 522, 538, 546, 550, 552, 553, 555, 558, 570, 586, 602, 610, 614, 616, 617, 619, 622, 634, 642, 646, 648 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..45.

MATHEMATICA

Select[ Range[ 672 ], (Count[ IntegerDigits[ #, 4 ], 2 ]==3)& ]

CROSSREFS

Sequence in context: A039470 A241049 A075296 * A045148 A045040 A044229

Adjacent sequences:  A023713 A023714 A023715 * A023717 A023718 A023719

KEYWORD

nonn,base,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified December 8 03:17 EST 2021. Contains 349590 sequences. (Running on oeis4.)