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Table of n, a(n) for n=1..46.
a[n_] := (Prime[n+1]^2-5)/4
(#^2-5)/4&/@Prime[Range[2, 50]] (* Harvey P. Dale, Jan 15 2019 *)
a(n) = A024701(n)-1.
Sequence in context: A242383 A141785 A144311 * A088486 A174917 A214451
Adjacent sequences: A074364 A074365 A074366 * A074368 A074369 A074370
Roger L. Bagula, Sep 23 2002
Edited by Dean Hickerson, Oct 09 2002