A023700 Numbers with exactly 2 2's in their ternary expansion.

8, 17, 20, 23, 24, 25, 35, 44, 47, 50, 51, 52, 56, 59, 60, 61, 65, 68, 69, 70, 72, 73, 75, 76, 89, 98, 101, 104, 105, 106, 116, 125, 128, 131, 132, 133, 137, 140, 141, 142, 146, 149, 150, 151, 153, 154, 156, 157, 164, 167, 168

Offset

1,1

Links

Seiichi Manyama, Table of n, a(n) for n = 1..10000

Mathematica

Select[ Range[ 189 ], (Count[ IntegerDigits[ #, 3 ], 2 ]==2)& ]

Crossrefs

Sequence in context: A075485 A217433 A271626 * A026231 A088488 A031458

Adjacent sequences: A023697 A023698 A023699 * A023701 A023702 A023703

Keyword

nonn,base,easy

Author

Olivier Gérard

Status

approved