A265927 Number of nX7 0..4 arrays with the absolute differences of each element with its with horizontal and antidiagonal neighbors unique.

17012, 1119424, 3883480, 13716476, 53801792, 238485164, 1135042936, 5759992224, 29783744648, 159386938728, 851999276304, 4668283409720, 25354240124600, 140755677796776, 771872865387920, 4322800211903112, 23867120132045176

Offset

1,1

Comments

Column 7 of A265928.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

R. H. Hardin, Empirical recurrence of order 48

Formula

Empirical recurrence of order 48 (see link above)

Example

Some solutions for n=1
..1..1..4..4..0..0..4....1..1..3..3..0..1..1....0..2..3..3..2..0..4

Crossrefs

Cf. A265928.

Sequence in context: A300151 A205232 A265972 * A252647 A332100 A252129

Adjacent sequences: A265924 A265925 A265926 * A265928 A265929 A265930

Keyword

nonn

Author

R. H. Hardin, Dec 18 2015

Status

approved