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A023740
Numbers with exactly 3 4's in base 5 expansion.
2
124, 249, 374, 499, 524, 549, 574, 599, 604, 609, 614, 619, 620, 621, 622, 623, 749, 874, 999, 1124, 1149, 1174, 1199, 1224, 1229, 1234, 1239, 1244, 1245, 1246, 1247, 1248, 1374, 1499, 1624, 1749, 1774, 1799, 1824, 1849
OFFSET
1,1
LINKS
MATHEMATICA
Select[ Range[ 2000 ], (Count[ IntegerDigits[ #, 5 ], 4 ]==3)& ]
CROSSREFS
Sequence in context: A270864 A038866 A043367 * A031476 A045205 A045295
KEYWORD
nonn,base,easy
STATUS
approved