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A023728 Numbers with exactly 3 1's in base 5 expansion. 2
31, 131, 151, 155, 157, 158, 159, 161, 166, 171, 181, 206, 231, 281, 406, 531, 631, 651, 655, 657, 658, 659, 661, 666, 671, 681, 706, 731, 751, 755, 757, 758, 759, 761, 766, 771, 775, 777, 778, 779, 785, 787, 788, 789, 790 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
Select[ Range[ 800 ], (Count[ IntegerDigits[ #, 5 ], 1 ]==3)& ]
CROSSREFS
Sequence in context: A259509 A183838 A043355 * A045259 A045244 A045229
KEYWORD
nonn,base,easy
AUTHOR
STATUS
approved

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Last modified July 22 09:51 EDT 2024. Contains 374490 sequences. (Running on oeis4.)