A326928 The number of n X n symmetric real (0,1) matrices whose eigenvalues are all integers.

2, 6, 28, 154, 1174, 11480

Offset

1,1

Links

Table of n, a(n) for n=1..6.

Crossrefs

Cf. A003024.

Sequence in context: A305199 A295792 A004984 * A277381 A184695 A086633

Adjacent sequences: A326925 A326926 A326927 * A326929 A326930 A326931

Keyword

nonn,more

Author

Tingyu Tao, Oct 22 2019

Status

approved