68591

Appears in sequences

• Number of Greek-key tours on a 5 X n board; i.e., self-avoiding walks on 5 X n grid starting in top left corner.at n=7A145156
• Number of elements less than 1/2 in the Cross Set which is the subset of the set of distinct resistances that can be produced using n unit resistors in series and/or parallel.at n=20A176498
• Number of length 4 1..(n+2) arrays with no leading partial sum equal to a prime.at n=20A254542
• Number of Greek-key tours on an 8 X n grid.at n=4A374307