A163002 Number of n X n binary arrays with all 1s connected and a path of 1s from upper left corner to lower right corner.

1, 3, 45, 2423, 482443, 360923899, 1012326365581, 10583931453268587, 410628432970492896401, 58940807698860767759080097, 31235684611422395105793077154373, 61025622782775877079925551890952450707, 439058030866550268551946597005515209497083151

Offset

1,2

Links

Andrew Howroyd, Table of n, a(n) for n = 1..15

Crossrefs

Main diagonal of A359573.

Sequence in context: A154242 A331710 A283698 * A117253 A012833 A012747

Adjacent sequences: A162999 A163000 A163001 * A163003 A163004 A163005

Keyword

nonn

Author

R. H. Hardin, Jul 20 2009

Extensions

a(8)-a(11) from Andrew Howroyd, Jan 06 2023

Terms a(12) and beyond from Andrew Howroyd, Jan 30 2023

Status

approved