login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A222728 Palindromic composite numbers starting with a digit 7. 4
77, 707, 717, 737, 747, 767, 777, 7007, 7117, 7227, 7337, 7447, 7557, 7667, 7777, 7887, 7997, 70007, 70107, 70307, 70407, 70707, 70807, 70907, 71017, 71117, 71217, 71417, 71517, 71617, 71717, 71817, 72027, 72127, 72327, 72427, 72527, 72627, 72827, 72927, 73137 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Subsequence of A032350 (palindromic nonprime numbers) and A002113 (palindromic numbers). Complement of A222727 (palindromic primes starting with a digit 7) with respect to A043042 (palindromic numbers starting with a digit 7).

LINKS

Jaroslav Krizek, Table of n, a(n) for n = 1..1038

CROSSREFS

Cf. A032350, A002113, A222727, A043042.

Sequence in context: A027574 A059047 A046149 * A223649 A205434 A125581

Adjacent sequences:  A222725 A222726 A222727 * A222729 A222730 A222731

KEYWORD

nonn,base

AUTHOR

Jaroslav Krizek, Mar 09 2013

STATUS

approved

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 21 22:35 EST 2019. Contains 329383 sequences. (Running on oeis4.)