A069340 Number of 18 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner.

1, 4684659, 4309313949364, 2192685751594010696, 842135117177233838318221, 276779468917310425392340761357, 82650556110091137942716277468309260, 23148397411303556672474237800571851799252, 6193097960464507527053208548973296715713058621

Offset

1,2

Links

Table of n, a(n) for n=1..9.

Crossrefs

Cf. 2 X n A048739, 3 X n A069325, 4 X n A069326, 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, 19 X n A069341, 20 X n A069342, n X n A069343, n X n symmetric A069344.

Sequence in context: A272701 A083605 A210333 * A205942 A271142 A258132

Adjacent sequences: A069337 A069338 A069339 * A069341 A069342 A069343

Keyword

nonn

Author

R. H. Hardin, Mar 16 2002

Extensions

a(6)-a(10) from Sean A. Irvine, Apr 28 2024

Status

approved