



0, 4, 12, 16, 20, 28, 32, 36, 44, 48, 52, 60, 64, 68, 76, 80, 84, 92, 96, 100, 108, 112, 116, 124, 128, 132, 140, 144, 148, 156, 160, 164, 172, 176, 180, 188, 192, 196, 204, 208, 212, 220, 224, 228, 236, 240, 244, 252, 256, 260, 268, 272, 276, 284, 288, 292, 300, 304
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OFFSET

1,2


COMMENTS

Ordered list of differences between even squares.


LINKS

Table of n, a(n) for n=1..58.


FORMULA

Numbers of the form (2m)^2  (2n)^2, sorted.


EXAMPLE

(2*0)^2  (2*0)^2 = 0,
(2*1)^2  (2*0)^2 = 4,
(2*2)^2  (2*1)^2 = 12,
(2*2)^2  (2*0)^2 = 16,
(2*3)^2  (2*2)^2 = 20,
...


PROG

(Python)
def DifferenceOfEvenSquares(maximumBound):
sequence = set([0])
for x in range(0, maximumBound+1, 4):
if x % 16 != 8:
sequence.add(x)
print(sorted(sequence))


CROSSREFS

Cf. A008590, A042965.
Sequence in context: A310564 A053362 A310565 * A077770 A310566 A108269
Adjacent sequences: A267955 A267956 A267957 * A267959 A267960 A267961


KEYWORD

easy,nonn


AUTHOR

Matthew Burch, Jan 22 2016


STATUS

approved



