A069326 Number of 4 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner.

1, 20, 295, 3828, 46557, 546286, 6279393, 71316632, 804230945, 9031118936, 101161197895, 1131456031256, 12643706576681, 141214773950750, 1576695869980497, 17600838146781308, 196457931325141165

Offset

1,2

Links

Table of n, a(n) for n=1..17.

Crossrefs

Row 4 of A359575.

Cf. 2 X n A048739, 3 X n A069325, 5 X n A069327, 6 X n A069328, 7 X n A069329, 8 X n A069330, 9 X n A069331, 10 X n A069332, 11 X n A069333, 12 X n A069334, 13 X n A069335, 14 X n A069336, 15 X n A069337, 16 X n A069338, 17 X n A069339, 18 X n A069340, 19 X n A069341, 20 X n A069342, n X n A069343, n X n symmetric A069344.

Sequence in context: A047795 A223956 A132168 * A001708 A016255 A322052

Adjacent sequences: A069323 A069324 A069325 * A069327 A069328 A069329

Keyword

nonn

Author

R. H. Hardin, Mar 16 2002

Status

approved