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A069486 2*prime(n)*prime(n+1). 3
12, 30, 70, 154, 286, 442, 646, 874, 1334, 1798, 2294, 3034, 3526, 4042, 4982, 6254, 7198, 8174, 9514, 10366, 11534, 13114, 14774, 17266, 19594, 20806, 22042, 23326, 24634, 28702, 33274, 35894, 38086, 41422, 44998 (list; graph; refs; listen; history; internal format)
OFFSET

1,1

COMMENTS

a(n) = 2*A006094(n);

together with A069482(n) and A069484(n) a Pythagorean triangle is formed with area = A069487(n).

CROSSREFS

Sequence in context: A084699 A064483 A110019 * A175157 A117313 A080563

Adjacent sequences:  A069483 A069484 A069485 * A069487 A069488 A069489

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 29 2002

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Last modified February 16 12:41 EST 2012. Contains 205909 sequences.