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URL: https://oeis.org/A074367

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A074367
(p^2-5)/4 for odd primes p.
0
1, 5, 11, 29, 41, 71, 89, 131, 209, 239, 341, 419, 461, 551, 701, 869, 929, 1121, 1259, 1331, 1559, 1721, 1979, 2351, 2549, 2651, 2861, 2969, 3191, 4031, 4289, 4691, 4829, 5549, 5699, 6161, 6641, 6971, 7481, 8009, 8189, 9119, 9311, 9701, 9899, 11129
OFFSET
1,2
MATHEMATICA
a[n_] := (Prime[n+1]^2-5)/4
(#^2-5)/4&/@Prime[Range[2, 50]] (* Harvey P. Dale, Jan 15 2019 *)
CROSSREFS
a(n) = A024701(n)-1.
Sequence in context: A242383 A141785 A144311 * A088486 A174917 A214451
KEYWORD
nonn,easy
AUTHOR
Roger L. Bagula, Sep 23 2002
EXTENSIONS
Edited by Dean Hickerson, Oct 09 2002
STATUS
approved