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A124434 LCM (least common multiple) of A001223 (sum of consecutive primes) and A001043 (difference of consecutive primes). +0
1
5, 8, 12, 36, 24, 60, 36, 84, 156, 60, 204, 156, 84, 180, 300, 336, 120, 384, 276, 144, 456, 324, 516, 744, 396, 204, 420, 216, 444, 1680, 516, 804, 276, 1440, 300, 924, 960, 660, 1020, 1056, 360, 1860, 384, 780, 396, 2460, 2604, 900, 456, 924, 1416, 480, 2460 (list; graph; listen)
OFFSET

1,1

FORMULA

a(n) = lcm((prime(n+1)+prime(n)),(prime(n+1)-prime(n)))

EXAMPLE

e.g. a(3)=12 because prime(3)=5, prime(4)=7 and lcm(7+5,7-5)=lcm(12,2)=12.

CROSSREFS

Cf. A001223, A001043.

Sequence in context: A114644 A138051 A026279 this_sequence A164128 A078412 A144650

Adjacent sequences: A124431 A124432 A124433 this_sequence A124435 A124436 A124437

KEYWORD

nonn

AUTHOR

Mitch Cervinka (Mitch.Cervinka(AT)eds.com), Dec 15 2006

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.


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