A259532 - OEIS

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A259532

Triangular array: row k shows the discriminant of sqrt(j) + sqrt(k) for j=1..k.

1

1, 8, 8, 12, 8, 12, 1, 2304, 2304, 1, 5, 8, 12, 8, 5, 24, 1600, 12, 12, 1600, 24, 28, 2304, 3600, 1, 3600, 2304, 28, 8, 12544, 2304, 5, 5, 2304, 12544, 8, 1, 8, 7056, 24, 5, 24, 7056, 8, 1, 40, 8, 2304, 28, 14400, 14400, 28, 2304, 8, 40, 44, 1600, 12, 8

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..1000

EXAMPLE

First seven rows:

1

8 8

12 8 12

1 2304 2304 1

5 8 12 8 5

24 1600 12 12 1600 24

28 2304 3600 1 3600 2304 28

MATHEMATICA

t = Table[NumberFieldDiscriminant[Sqrt[j] + Sqrt[k + 1 - j]], {k, 1, 16}, {j, 1, k}]

TableForm[t] (* A259532 array *)

Flatten[t] (* A259532 sequence *)

CROSSREFS

Cf. A259911, A259912, A259913.

Sequence in context: A001732 A213746 A219236 * A329822 A226835 A363326

Adjacent sequences: A259529 A259530 A259531 * A259533 A259534 A259535

KEYWORD

nonn,easy,tabl

AUTHOR

Clark Kimberling, Jul 20 2015

STATUS

approved