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A076621 Least square greater the product of two successive primes. +0
1
9, 16, 36, 81, 144, 225, 324, 441, 676, 900, 1156, 1521, 1764, 2025, 2500, 3136, 3600, 4096, 4761, 5184, 5776, 6561, 7396, 8649, 9801, 10404, 11025, 11664, 12321, 14400, 16641, 17956, 19044, 20736, 22500, 23716, 25600, 27225, 28900, 30976, 32400 (list; graph; listen)
OFFSET

1,1

COMMENT

a(n) = A048761(A006094(n));

a(n) = prime(n)*prime(n+1)+((prime(n)-(prime(n+1))/2)^2 = A006094(n) + A074927(n).

FORMULA

For n>1: a(n) = ((prime(n)+prime(n+1))/2)^2.

CROSSREFS

Sequence in context: A153362 A039788 A110833 this_sequence A134937 A076431 A067956

Adjacent sequences: A076618 A076619 A076620 this_sequence A076622 A076623 A076624

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Oct 22 2002

page 1

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Last modified December 13 23:45 EST 2009. Contains 170824 sequences.


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