This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A120720 Even square as prime gaps to produce a set of triangular primes. 0
 7, 19, 41, 11, 23, 43, 71, 47, 17, 29, 113, 157, 53, 23, 83, 163, 59, 167, 347, 173, 353, 47, 67, 131, 227, 431 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS 23 seems to be made two different ways here. LINKS FORMULA a(n,m) = If[ PrimeQ[(2*n)^2 + Prime[m]], (2*n)^2 + Prime[m]] EXAMPLE 7, 19 41 11, 23, 43, 71 47 17, 29, 113, 157 53 23, 83, 163 59, 167, 347 173, 353 47, 67, 131, 227, 431 MATHEMATICA t[n_, m_] := If[ PrimeQ[(2*n)^2 + Prime[m]], (2*n)^2 + Prime[m], {}] a = Table[Flatten[Table[t[n, m], {n, 1, m}]], {m, 2, 11}] Flatten[a] CROSSREFS Sequence in context: A303855 A295077 A239359 * A098422 A191066 A087762 Adjacent sequences:  A120717 A120718 A120719 * A120721 A120722 A120723 KEYWORD nonn AUTHOR Roger L. Bagula, Aug 15 2006 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.

Last modified October 18 15:21 EDT 2019. Contains 328162 sequences. (Running on oeis4.)