A247532 Number of length n+3 0..7 arrays with some disjoint pairs in every consecutive four terms having the same sum

848, 1616, 3220, 6584, 13668, 29012, 62108, 133716, 288996, 627654, 1366118, 2978172, 6500008, 14206554, 31071490, 67992670, 148845278, 325994076, 714155690, 1564780972, 3429103460, 7515830880, 16474726804, 36114808462

Offset

1,1

Comments

Column 7 of A247533

Links

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

Example

Some solutions for n=6
..6....1....2....6....4....5....5....4....0....1....2....4....3....5....1....4
..7....6....5....4....5....6....6....1....5....2....5....6....5....3....6....4
..3....4....7....5....6....2....5....5....4....1....6....5....6....4....3....5
..2....3....4....5....7....3....6....2....1....2....3....7....4....2....4....5
..6....1....2....4....4....5....5....6....0....3....4....4....7....1....5....4
..7....0....5....6....5....6....4....1....5....4....5....6....5....3....6....6
..3....4....1....5....2....2....5....5....4....3....2....5....6....4....7....5
..2....3....4....3....7....1....6....2....1....4....3....7....6....6....4....7
..6....1....2....4....4....7....7....4....0....3....6....6....7....5....5....4

Crossrefs

Sequence in context: A280484 A203335 A252253 * A235065 A268112 A194618

Adjacent sequences: A247529 A247530 A247531 * A247533 A247534 A247535

Keyword

nonn

Author

R. H. Hardin, Sep 18 2014

Status

approved