OFFSET
1,3
COMMENTS
For 1 <= n <= 34, a(2*n-1) = a(2*n) = 1 + Sum_{k=1..n-1} A350330(k), but this does not hold for n = 35.
LINKS
Wikipedia, Hankel matrix
PROG
(Python)
from sympy import Matrix
from itertools import count
def A350350_list(nmax):
a=[1]
for n in range(1, nmax):
a.append(next(k for k in count(a[-1]) if all(Matrix((n-r)//2+1, (n-r)//2+1, lambda i, j:(a[r:]+[k])[i+j]).det()!=0 for r in range(n-2, -1, -2))))
return a
CROSSREFS
KEYWORD
nonn
AUTHOR
Pontus von Brömssen, Dec 26 2021
STATUS
approved