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A074235 Numbers that cannot be the larger leg of an integer right triangle. 3
1, 2, 3, 5, 6, 7, 9, 10, 11, 13, 14, 17, 18, 19, 22, 23, 25, 26, 27, 29, 31, 33, 34, 37, 38, 39, 41, 43, 46, 47, 49, 50, 51, 53, 54, 57, 58, 59, 61, 62, 65, 66, 67, 69, 71, 73, 74, 78, 79, 81, 82, 83, 85, 86, 87, 89, 93, 94, 95, 97, 98, 101, 102, 103, 106, 107, 109, 111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

The possible values of larger leg of integer right triangle are in A009012.

A227481(a(n)) = 1. - Reinhard Zumkeller, Oct 11 2013

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..1000

EXAMPLE

5 is a member because a^2+5^2=c^2 has no solution for a<5, with integer a, c. 13 is a member because a^2+13^2=c^2 has no solution for a<13,with integer a, c.

PROG

(Haskell)

a074235 n = a074235_list !! (n-1)

a074235_list = filter ((== 1) . a227481) [1..]

-- Reinhard Zumkeller, Oct 11 2013

CROSSREFS

Cf. A009012.

Cf. A009023 (complement).

Sequence in context: A248565 A065896 A099308 * A325366 A192189 A285375

Adjacent sequences:  A074232 A074233 A074234 * A074236 A074237 A074238

KEYWORD

nonn

AUTHOR

Zak Seidov, Sep 18 2002

STATUS

approved

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Last modified May 8 19:28 EDT 2021. Contains 343666 sequences. (Running on oeis4.)