Number of configurations that require a minimum of n moves to be reached, starting with the empty square in one of the corners of an infinitely large extension of Sam Loyd's sliding block 15-puzzle.

A090377

Number of configurations that require a minimum of n moves to be reached, starting with the empty square in one of the corners of an infinitely large extension of Sam Loyd's sliding block 15-puzzle.

Terms

    a(0) =1a(1) =2a(2) =4a(3) =10a(4) =26a(5) =66a(6) =173a(7) =456a(8) =1230a(9) =3318a(10) =9066a(11) =24768a(12) =68304a(13) =188370a(14) =523083a(15) =1452560a(16) =4054708a(17) =11318926

External references