Number of configurations that require a minimum of n moves to be reached, starting with the empty square at mid-side of a boundary of an infinitely large extension of Sam Loyd's sliding block 15-puzzle.
A090378
Number of configurations that require a minimum of n moves to be reached, starting with the empty square at mid-side of a boundary of an infinitely large extension of Sam Loyd's sliding block 15-puzzle.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =19a(4) =53a(5) =147a(6) =409a(7) =1151a(8) =3255a(9) =9241a(10) =26267a(11) =74895a(12) =213775a(13) =611463a(14) =1750277a(15) =5017901
External references
- oeis: A090378