A228738 Number of arrays of the median of three adjacent elements of some length n+2 0..6 array.

7, 49, 343, 1981, 9191, 41083, 181885, 819099, 3749921, 17338503, 80437853, 373008019, 1727505765, 7991536851, 36949011409, 170810543525, 789678726959, 3651141596711, 16882484843753, 78065155382933, 360977446471839

Offset

1,1

Comments

Column 6 of A228740.

Links

R. H. Hardin, Table of n, a(n) for n = 1..81

Example

Some solutions for n=4
..0..6..3..6..1..5..0..3..5..6..1..4..6..2..5..3
..1..4..5..2..2..0..2..0..5..6..0..2..5..6..5..6
..3..1..0..4..1..6..0..0..2..5..0..6..2..3..1..3
..4..3..3..4..2..2..4..6..0..4..0..2..4..4..0..4

Crossrefs

Sequence in context: A057266 A057833 A014949 * A057845 A269617 A269581

Adjacent sequences: A228735 A228736 A228737 * A228739 A228740 A228741

Keyword

nonn

Author

R. H. Hardin, Sep 01 2013

Status

approved