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A198385 Second of a triple of squares in arithmetic progression. 16
25, 100, 169, 225, 289, 400, 625, 676, 625, 841, 900, 1156, 1369, 1225, 1681, 1521, 1600, 2500, 2025, 2704, 2601, 2500, 3721, 2809, 3025, 4225, 3364, 3600, 4225, 4225, 4225, 4624, 5625, 5476, 7225, 4900, 6724, 6084, 5329, 5625, 6400, 7225, 7225, 7225, 7921 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) = A198389(n)^2; a(n) - A198384(n) = A198386(n) - a(n) = A198387(n).

A198436(n) = a(A198409(n)).

LINKS

Ray Chandler, Table of n, a(n) for n = 1..10000

Reinhard Zumkeller, Table of initial values

Keith Conrad, Arithmetic progressions of three squares

PROG

(Haskell)

a198385 n = a198385_list !! (n-1)

a198385_list = map (^ 2) a198389_list

CROSSREFS

Sequence in context: A144854 A237202 A335717 * A134422 A016850 A309779

Adjacent sequences:  A198382 A198383 A198384 * A198386 A198387 A198388

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller, Oct 24 2011

STATUS

approved

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Last modified September 18 07:39 EDT 2020. Contains 337166 sequences. (Running on oeis4.)