login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A044784 Numbers n such that string 7,1 occurs in the base 10 representation of n but not of n+1. 0
71, 171, 271, 371, 471, 571, 671, 719, 771, 871, 971, 1071, 1171, 1271, 1371, 1471, 1571, 1671, 1719, 1771, 1871, 1971, 2071, 2171, 2271, 2371, 2471, 2571, 2671, 2719, 2771, 2871, 2971, 3071, 3171, 3271, 3371, 3471, 3571 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
MATHEMATICA
SequencePosition[Table[If[SequenceCount[IntegerDigits[n], {7, 1}]>0, 1, 0], {n, 4000}], {1, 0}][[All, 1]] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Jun 20 2021 *)
CROSSREFS
Sequence in context: A142344 A278127 A044403 * A142488 A331008 A068364
KEYWORD
nonn,base
AUTHOR
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 17:42 EDT 2024. Contains 371254 sequences. (Running on oeis4.)