#The list below (not yet in the OEIS, Sept. 2024) consists of the first 16 terms of the sequence enumerating
#8 by 2n 0-1 matrices with row sums 4 and column sums n (i.e. every row and every column has as many 0s as 1s)
#and in addition satisfy the "Not Alone" condition, i.e. avoiding the patterns 010 and 101 both in rows and columns

L:=
[18, 324, 2776, 34586, 575270, 10061200, 194929482, 4115573632,
91947761368, 2167131637540, 53550929019486, 1376887129235964,
36670419524921146, 1007581514656491404, 28454294028011307236,
823234343053953729538
]: