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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A159071 Primes which are the sum of 6 consecutive triangular numbers A000217. 1
 83, 251, 683, 1091, 2531, 5051, 7211, 11171, 15131, 16883, 18731, 21683, 24851, 29411, 33083, 42491, 59651, 85691, 107171, 109451, 114083, 133571, 138683, 151883, 160091, 189011, 201251, 204371, 236891, 268211, 271811, 297683, 309131 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Primes of the form 3*k^2 + 18*k + 35 = 3*(k+3)^2 + 8, k >= 0. [R. J. Mathar, Apr 06 2009] Primes which are the sum of 3 consecutive odd squares A016754. [Alex Ratushnyak, Jul 24 2012] LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..5000 EXAMPLE 83 = A000040(23) = Sum_{i=2..7} A000217(i). 251 = A000040(54) = Sum_{i=6..11} A000217(i). 683 = A000040(124) = Sum_{i=12..17) A000217(i). MATHEMATICA tr[a_]:=Module[{x}, s=0; If[a<0, b=Abs[a]+1, b=a]; For[i=1, i

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 April 23 18:16 EDT 2024. Contains 371916 sequences. (Running on oeis4.)