A200666 Number of 0..6 arrays x(0..n-1) of n elements with each no smaller than the sum of its three previous neighbors modulo 7.

7, 28, 112, 448, 1813, 7322, 29536, 119066, 479993, 1935168, 7802161, 31456852, 126827111, 511338342, 2061602939, 8311924900, 33511832745, 135112262286, 544742594039, 2196280995578, 8854916583356, 35701054472646, 143938712300001

Offset

1,1

Links

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

Example

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

Crossrefs

Column 6 of A200668.

Sequence in context: A026642 A200467 A002042 * A207098 A037597 A037702

Adjacent sequences: A200663 A200664 A200665 * A200667 A200668 A200669

Keyword

nonn

Author

R. H. Hardin, Nov 20 2011

Status

approved