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 A252845 Number of (1+2)X(n+2) 0..3 arrays with every consecutive three elements in every row and diagonal having one or two distinct values, and in every column and antidiagonal having two or three distinct values, and new values 0 upwards introduced in row major order 1
 1305, 15395, 175204, 2045858, 23788014, 277324636, 3231587589, 37668251387, 439059475960, 5117820299952, 59655081232232, 695361723264101, 8105403729361748, 94479728193131557, 1101292442347401777 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 1 of A252844 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 96 FORMULA Empirical recurrence of order 96 (see link above) EXAMPLE Some solutions for n=3 ..0..0..0..1..1....0..0..1..0..1....0..1..0..0..2....0..0..1..1..1 ..2..0..0..0..0....2..2..1..1..2....2..2..1..1..2....1..1..2..2..0 ..1..3..3..0..3....3..2..2..0..0....0..0..0..0..1....0..0..0..2..2 CROSSREFS Sequence in context: A252308 A277772 A252844 * A252841 A255025 A126841 Adjacent sequences:  A252842 A252843 A252844 * A252846 A252847 A252848 KEYWORD nonn AUTHOR R. H. Hardin, Dec 22 2014 STATUS approved

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Last modified September 22 12:19 EDT 2019. Contains 327307 sequences. (Running on oeis4.)