A163693 Number of n X 10 binary arrays with all 1's connected, a path of 1's from upper left corner to lower right corner, and no 1 having more than two 1's adjacent.

1, 138, 3690, 66724, 1103582, 15423592, 205244426, 2823668755, 40028350367, 564046444356, 7746499824826, 103574236549717, 1359259728922070, 17658962999637538, 228143967538513553, 2933312156846689725, 37502162763586490481, 476487219869266126948, 6018003875629606358360, 75614652548364847258518

Offset

1,2

Links

Table of n, a(n) for n=1..20.

Crossrefs

Row 10 of A391818.

Sequence in context: A281592 A213963 A279964 * A089518 A223192 A199839

Adjacent sequences: A163690 A163691 A163692 * A163694 A163695 A163696

Keyword

nonn

Author

R. H. Hardin, Aug 03 2009

Extensions

a(7) onward from Andrew Howroyd, Dec 24 2025

Status

approved