A069342 - OEIS

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A069342

Number of 20 X n binary arrays with path of adjacent 1's from upper right corner to lower left corner.

20

1, 27304196, 120418887728947, 273114307102338469932, 451242636516479543205804329, 625576823311351623848371148927043, 778880000189830517730349450554806038383, 903099763914081099274411192869395521423076059, 995759593882933848778575773902474323196918603122861

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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, 18 X n A069340, 19 X n A069341, n X n A069343, n X n symmetric A069344.

Sequence in context: A327281 A251806 A184670 * A151698 A202571 A274367

Adjacent sequences: A069339 A069340 A069341 * A069343 A069344 A069345

KEYWORD

nonn

AUTHOR

R. H. Hardin, Mar 16 2002

EXTENSIONS

a(5)-a(9) from Sean A. Irvine, Apr 28 2024

STATUS

approved