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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A298075 Primes p whose last digit is the same as that of both its predecessor prime and its successor prime. 0
 1637, 3109, 4327, 4861, 6491, 6803, 8563, 11047, 11887, 13441, 13669, 14197, 17519, 17827, 18859, 18869, 20369, 20431, 22511, 22531, 22973, 22993, 24943, 25219, 26459, 26479, 27397, 27551, 28319, 29453, 29473, 31091, 32213, 32401, 34939, 35201, 35291, 36353, 36373 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 69623 is the least prime in this sequence that is equidistant from its predecessor prime (69593) and its successor prime (69653). LINKS EXAMPLE 1637 is in the sequence because it is prime with last digit 7, and both its predecessor prime (1627) and successor prime (1657) also end in 7. 3109 is in the sequence because each of the three consecutive primes 3089, 3109, and 3119 ends in 9. 3119 is not in the sequence: although it is prime and both it and its predecessor prime (3109) end with the digit 9, the next prime (3121) does not. MATHEMATICA Select[Partition[Prime[Range[10000]], 3, 1], Mod[#[[1]], 10] == Mod[#[[2]], 10] == Mod[#[[3]], 10] &][[All, 2]] CROSSREFS Subsequence of A290450. Sequence in context: A233121 A054808 A218010 * A239160 A206234 A158775 Adjacent sequences:  A298072 A298073 A298074 * A298076 A298077 A298078 KEYWORD nonn,base AUTHOR K. D. Bajpai, Jan 11 2018 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.

Last modified May 18 10:09 EDT 2022. Contains 353807 sequences. (Running on oeis4.)