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A023701
Numbers with exactly 3 2's in their ternary expansion.
3
26, 53, 62, 71, 74, 77, 78, 79, 107, 134, 143, 152, 155, 158, 159, 160, 170, 179, 182, 185, 186, 187, 197, 206, 209, 212, 213, 214, 218, 221, 222, 223, 227, 230, 231, 232, 234, 235, 237, 238, 269, 296, 305, 314, 317, 320, 321
OFFSET
1,1
LINKS
MATHEMATICA
Select[ Range[ 324 ], (Count[ IntegerDigits[ #, 3 ], 2 ]==3)& ]
CROSSREFS
Sequence in context: A121738 A335475 A043331 * A031459 A044992 A042338
KEYWORD
nonn,base,easy
STATUS
approved