OFFSET
0,3
COMMENTS
Conjecture: a(n) is the permanent of the n X n matrix whose generic element is given by M_{i,j} = 1 if i = j or i + j = 1 (mod 2), with i,j in [n].
MATHEMATICA
CROSSREFS
KEYWORD
nonn
AUTHOR
Stefano Spezia, Aug 06 2024
STATUS
approved