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!)
A198169 Primes from merging of 9 successive digits in decimal expansion of sqrt(2). 27

%I #16 Dec 14 2014 06:15:09

%S 213562373,488016887,688724209,807856967,718753769,376948073,

%T 501384623,470109559,609552329,292304843,260362799,396546331,

%U 523950547,877599617,172983557,220337531,570113543,160386899,603868999,782306849,684929369,861249497,124949771

%N Primes from merging of 9 successive digits in decimal expansion of sqrt(2).

%C Leading zeros are not permitted, so each term is 9 digits in length.

%H Vincenzo Librandi, <a href="/A198169/b198169.txt">Table of n, a(n) for n = 1..1000</a>

%t With[{len=9},Select[FromDigits/@Partition[RealDigits[Sqrt[2],10,1000][[1]],len,1],IntegerLength[#]==len&&PrimeQ[#]&]]

%Y Cf. A103773, A103789, A103793, A103808, A103809, A103810, A103811, A103812, A104824, A104825, A104826, A104843, A104844, A104845, A104846, A104847, A104848, A104849, A104850, A198161, A198162, A198163, A198164, A198165, A198166, A198167, A198168, A198170, A198171, A198172, A198173, A198174, A198175, A104851, A198177.

%K nonn,base

%O 1,1

%A _Harvey P. Dale_, Oct 21 2011

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 29 10:22 EDT 2024. Contains 371268 sequences. (Running on oeis4.)