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
Keywords
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.