567241901289
domain: N
Appears in sequences
- Number of 4 X n matrices containing a 1 in the top left entry, all entries are integer values and adjacent entries differ by at most 1.at n=7A138979
- Number of n X n integer matrices, symmetric under horizontal reflection, with adjacent elements differing by no more than 1, counting matrices differing by a constant only once.at n=7A141440