A043489 -id:A043489 - cp's OEIS frontend

A043517 Numbers having one 7 in base 10.

7, 17, 27, 37, 47, 57, 67, 70, 71, 72, 73, 74, 75, 76, 78, 79, 87, 97, 107, 117, 127, 137, 147, 157, 167, 170, 171, 172, 173, 174, 175, 176, 178, 179, 187, 197, 207, 217, 227, 237, 247, 257, 267, 270, 271, 272, 273, 274, 275, 276

Offset: 1

Clark Kimberling

Enrique Pérez Herrero, Table of n, a(n) for n = 1..2000
Index entries for 10-automatic sequences.

Cf. A043489, A043493, A043497, A043501, A043505, A043509, A043513, A043521, A043525, A011537.

Select[Range[9000],DigitCount[#,10,7]==1&]

A043525 Numbers having one 9 in base 10.

Original entry on oeis.org

9, 19, 29, 39, 49, 59, 69, 79, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 109, 119, 129, 139, 149, 159, 169, 179, 189, 190, 191, 192, 193, 194, 195, 196, 197, 198, 209, 219, 229, 239, 249, 259, 269, 279, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, 309, 319

Offset: 1

Clark Kimberling

Enrique Pérez Herrero, Table of n, a(n) for n = 1..2000
Index entries for 10-automatic sequences.

Cf. A043489, A043493, A043497, A043501, A043505, A043509, A043513, A043517, A043521.
Cf. A011539, A140502.
Subsequence of A011539.

Select[Range[300],DigitCount[#,10,9]==1&] (* Harvey P. Dale, Jan 19 2013 *)

def ok(n): return str(n).count('9') == 1
print(list(filter(ok, range(320)))) # Michael S. Branicky, Sep 19 2021

Sum_{n>=1} 1/a(n) = A140502. - Amiram Eldar, Nov 14 2020

A118681 Numbers that contain a single zero in bases 2 and 10.

Original entry on oeis.org

0, 30, 503, 507, 509, 510, 1015, 1019, 1021, 1022, 2015, 2031, 2039, 2043, 2045, 2046, 3071, 4031, 4063, 4079, 4087, 4091, 4093, 4094, 8063, 8190, 30719, 32703, 65023, 65407, 65503, 98303, 129023, 130559, 130815, 130943, 131039, 131055

Offset: 1

Zak Seidov, May 21 2006

Intersection of A030130 and A043489.

Select[Range[0,140000],DigitCount[#,10,0]==DigitCount[#,2,0]==1&] (* Harvey P. Dale, Apr 10 2012 *)

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A043517 Numbers having one 7 in base 10.

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A043525 Numbers having one 9 in base 10.

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A118681 Numbers that contain a single zero in bases 2 and 10.

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