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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A250843 Primes of the form 6^x + y^6 with x, y > 0. 2
 7, 37, 1297, 15661, 16921, 304606801, 594823357, 1838266921, 1898731801, 4751783857, 13841287237, 13841567137, 13901753377, 26901981217, 42180533677, 42182213257, 51520374397, 51522053977, 75418891921, 92205451297, 106044804721 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS Robert Israel, Table of n, a(n) for n = 1..10000 EXAMPLE 37 is in this sequence because 37 is prime and 6^2+1^6 = 37. 16921 is in this sequence because 16921 is prime and 6^4+5^6 = 16921. MAPLE N:= 10^12: # for all terms <= N S:= {}: for y from 1 while y^6 < N do for x from 1 do v:= 6^x + y^6; if v > N then break fi; if isprime(v) then S:= S union {v}; fi od od: sort(convert(S, list)); # Robert Israel, Nov 11 2019 CROSSREFS Cf. A250547. Cf. similar sequences listed in A250481. Sequence in context: A155010 A292807 A210620 * A078303 A127729 A129736 Adjacent sequences: A250840 A250841 A250842 * A250844 A250845 A250846 KEYWORD nonn AUTHOR Vincenzo Librandi, Dec 01 2014 EXTENSIONS Missing terms inserted by Robert Israel, Nov 11 2019 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 September 7 13:22 EDT 2024. Contains 375730 sequences. (Running on oeis4.)