A101450 - OEIS

A101450

Areas of (not necessarily primitive) Pythagorean triangles which are palindromes.

6, 46464, 48384, 63336, 65856, 66066, 474474, 666666, 4053504, 4228224, 4244424, 4383834, 4405044, 6693966, 42066024, 42455424, 42666624, 43177134, 48455484, 49899894, 60366306, 480333084, 610262016, 656161656, 4242662424, 4365995634, 4409449044, 4475775744

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

OFFSET

1,1

COMMENTS

Compare areas of primitive Pythagorean triangles which are palindromes, A101439.

LINKS

Sean A. Irvine, Table of n, a(n) for n = 1..100

FORMULA

Intersection of A002113 and A009112. - M. F. Hasler, Jun 06 2024

EXAMPLE

6 is a member as it is a palindromic number and is area of the Pythagorean triangle (3, 4, 5).

46464 is a member as it is a palindromic number and is area of the Pythagorean triangle (264, 352, 440).

63336 is a member as it is a palindromic number and is area of the Pythagorean triangle with (377, 336, 505).

666666 is a member as it is a palindromic number and is area of the Pythagorean triangle(693, 1924, 2045).

PROG

(PARI) for(n=1, oo, is_A009112(a=A002113(n)) && print1(a", ")) \\ or better:

A101450_row(n) = select(is_A009112, A002113_row(n)) \\ row n = the n-digit terms - M. F. Hasler, Jun 06 2024

CROSSREFS

Cf. A101439.

Cf. A002113, A009112.

Sequence in context: A295788 A295789 A261626 * A013838 A353033 A289391

Adjacent sequences: A101447 A101448 A101449 * A101451 A101452 A101453

KEYWORD

base,nonn

AUTHOR

Zak Seidov, Jan 19 2005

EXTENSIONS

a(16), a(17), a(19)-a(23) from Robert G. Wilson v, Jan 31 2005

Missing terms inserted and entry revised by Sean A. Irvine, May 13 2025

STATUS

approved