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A072360 One-sixth the area of the smallest primitive d-arithmetic triangle, where d=A072330(n). 7
1, 26, 21, 91, 95, 196, 341, 536, 790, 259, 559, 1030, 654, 2926, 549, 4029, 1241, 4706, 5529, 5335, 1729, 1001, 1544, 2786, 9324, 12649, 4446, 8645, 9591, 1651, 3059, 10234, 3010, 3925, 19005, 2535, 16676, 14174, 8074, 25620, 33205, 8060 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Such a triangle has middle side 2*x'.

LINKS

Table of n, a(n) for n=1..42.

FORMULA

a(n) = x'*y'/2, where (x', y') is the fundamental solution to x^2 - 3*y^2 = d^2, where d=A072330(n).

CROSSREFS

Cf. A072330, A086909, A089019, A089020, A096672, A096673, A096674.

Sequence in context: A040652 A154295 A277685 * A205322 A291470 A093538

Adjacent sequences:  A072357 A072358 A072359 * A072361 A072362 A072363

KEYWORD

nonn

AUTHOR

Lekraj Beedassy, Jul 18 2002

EXTENSIONS

Edited, corrected and extended by Ray Chandler, Jul 03 2004

STATUS

approved

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Last modified July 21 19:25 EDT 2019. Contains 325199 sequences. (Running on oeis4.)