A347800 Number of tilings of an n X n square using integer-sided square tiles of area > 1.

1, 0, 1, 1, 2, 1, 7, 1, 48, 50, 796, 777, 24823, 9315, 1501873, 2585314, 200614419, 382810931, 52597087873, 48712723680, 27115688491527

Offset

0,5

Links

Table of n, a(n) for n=0..20.

Formula

a(n) = A226206(n,n).

Example

a(4) = 2:
  ._._._._.   ._._._._.
  |       |   |   |   |
  |       |   |___|___|
  |       |   |   |   |
  |_______|   |___|___|   .

Crossrefs

Main diagonal of A226206.

Cf. A045846.

Sequence in context: A333599 A335405 A369924 * A341738 A128747 A205945

Adjacent sequences: A347797 A347798 A347799 * A347801 A347802 A347803

Keyword

nonn,more

Author

Alois P. Heinz, Sep 14 2021

Status

approved