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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A328197 Smallest prime (p) of six consecutive primes (p,q,r,u,v,w) for which the conic section discriminant (Delta) for general conic section px^2 + qy^2 + rz^2 + 2uyz + 2vxz + 2wxy = 0 is a fourth power. 0
 430487, 1288337, 2317097, 3047311, 6045077, 10593617, 11166347, 14122697, 14774537, 16622717, 17905427, 17956637, 18614777, 21677701, 23874467, 24148547, 25109057, 28198187, 31543847, 34953227, 35542667, 35761409, 40321007, 41627671, 41961587, 44536469, 46184627 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Delta = pqr + 2uvw - pu^2 - qv^2 - rw^2 for the general conic section px^2 + qy^2 + rz^2 + 2uyz + 2vxz + 2wxy = 0. LINKS EXAMPLE For n = 1, (p,q,r,u,v,w) = (430487,430499,430511,430513,430517,430543), Delta = 1296 = 6^4. Hence, 430487 the smallest prime of the six is a member. CROSSREFS Cf. A000040. Sequence in context: A051595 A234857 A186593 * A233620 A271110 A237926 Adjacent sequences:  A328194 A328195 A328196 * A328198 A328199 A328200 KEYWORD nonn AUTHOR Philip Mizzi, Oct 07 2019 EXTENSIONS More terms from Giovanni Resta, Oct 09 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 July 3 10:03 EDT 2022. Contains 355050 sequences. (Running on oeis4.)