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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

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