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A194777 Number of lower triangles of an (n+12) X (n+12) 0..7 array with new values introduced in row major order 0..7 and no element unequal to more than one horizontal or vertical neighbor. 0
85013, 231445, 639753, 1784723, 5044981, 14399939, 41587186, 121261490, 357312638, 1062459348, 3188769448, 9649809740, 29439886715, 90469050263, 279932030931, 871510145365 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A194778.

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

Some solutions for 13 X 13 including a 7:

  0                           0

  1 1                         1 1

  1 1 1                       1 1 1

  2 2 2 2                     2 2 2 2

  2 2 2 2 2                   2 2 2 2 2

  3 3 3 3 3 3                 3 3 3 3 3 3

  3 3 3 3 3 3 3               3 3 3 3 3 3 3

  4 4 4 4 4 4 4 4             4 4 4 4 4 4 4 4

  4 4 4 4 4 4 4 4 4           4 4 4 4 4 4 4 4 4

  5 5 5 5 5 5 5 5 5 5         5 5 5 5 5 5 5 5 5 5

  5 5 5 5 5 5 5 5 5 5 6       5 5 5 5 5 5 5 5 5 5 5

  5 5 5 5 5 5 5 5 5 5 6 6     6 6 6 6 6 6 6 6 6 6 6 6

  5 5 5 5 5 5 5 5 5 5 6 6 7   6 6 6 6 6 6 6 6 6 6 6 6 7

CROSSREFS

Sequence in context: A205023 A207298 A236668 * A031671 A010083 A235968

Adjacent sequences:  A194774 A194775 A194776 * A194778 A194779 A194780

KEYWORD

nonn

AUTHOR

R. H. Hardin, Sep 02 2011

STATUS

approved

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Last modified May 26 02:45 EDT 2022. Contains 354074 sequences. (Running on oeis4.)