This site is supported by donations to The OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A271511 a(n) = (p+1)*(p+2)/2 where p is the n-th prime. 2
 6, 10, 21, 36, 78, 105, 171, 210, 300, 465, 528, 741, 903, 990, 1176, 1485, 1830, 1953, 2346, 2628, 2775, 3240, 3570, 4095, 4851, 5253, 5460, 5886, 6105, 6555, 8256, 8778, 9591, 9870, 11325, 11628, 12561, 13530, 14196, 15225, 16290, 16653, 18528, 18915, 19701 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Subsequence of A253145. LINKS Vincenzo Librandi, Table of n, a(n) for n = 1..1000 MATHEMATICA Table[(Prime[n]^2 + 3 Prime[n] + 2) / 2, {n, 50}] PROG (MAGMA) [(p+1)*(p+2) / 2: p in PrimesUpTo(200)]; (PARI) lista(nn) = forprime(p=2, nn, print1((p+1)*(p+2)/2, ", ")); \\ Altug Alkan, Apr 09 2016 CROSSREFS Cf. A253145. Sequence in context: A190273 A030007 A058549 * A287993 A220035 A083285 Adjacent sequences:  A271508 A271509 A271510 * A271512 A271513 A271514 KEYWORD nonn,easy AUTHOR Vincenzo Librandi, Apr 09 2016 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 | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified October 24 01:08 EDT 2018. Contains 316541 sequences. (Running on oeis4.)