A069377 Number of 19 X n binary arrays with a path of adjacent 1's from top row to bottom row.

1, 22619537, 73209847696773, 115159568055775538305, 127111602733664216603859933, 114600698023505978867449552531361, 90979848541738331379871952593270363301, 66310152669631463041584664319631353072678161, 45499186393097406209322583222635994035907090539853

Offset

1,2

Links

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

Crossrefs

Cf. 1 X n A000225, 2 X n A005061, n X 2 A001333, vertical path of 1 A069361-A069395, vertical paths of 0+1 A069396-A069416, vertical path of 1 not 0 A069417-A069428, no vertical paths A069429-A069447, no horizontal or vertical paths A069448-A069452.

Sequence in context: A126028 A226480 A238154 * A235931 A204414 A114666

Adjacent sequences: A069374 A069375 A069376 * A069378 A069379 A069380

Keyword

nonn

Author

R. H. Hardin, Mar 22 2002

Extensions

a(5)-a(9) from Sean A. Irvine, Apr 30 2024

Status

approved