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 A202510 Number of zero-sum -7..7 arrays of n elements with first through third differences also in -7..7 1
 1, 7, 57, 297, 1785, 11015, 68781, 436919, 2782455, 17852623, 114949893, 742430377, 4811939259, 31282061157, 203951966061, 1333111663347, 8732654184777, 57311401737559, 376739449264935, 2480070264283519, 16347300910687523 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Column 7 of A202511 LINKS R. H. Hardin, Table of n, a(n) for n = 1..100 EXAMPLE Some solutions for n=7 ..7....5...-4....3...-2....5....1....7....7...-2...-6....5....1...-5...-1....5 ..3....4...-1....0....4...-1....5....6....5....1...-2....2...-3...-7....2....0 ..0....1....3...-3....5...-2....6....2....3....2....1...-2...-3...-3....2...-2 .-5....1....2...-3....0...-2....2...-3....0....2....0...-3....1....3....2....1 .-6....0....2...-1...-5...-3...-1...-7...-3...-1...-1...-4....4....7....0....2 .-2...-4....1....0...-3....0...-6...-6...-5...-1....3...-2....2....6....0...-1 ..3...-7...-3....4....1....3...-7....1...-7...-1....5....4...-2...-1...-5...-5 CROSSREFS Sequence in context: A274721 A180817 A201438 * A042187 A201872 A218587 Adjacent sequences: A202507 A202508 A202509 * A202511 A202512 A202513 KEYWORD nonn AUTHOR R. H. Hardin Dec 20 2011 STATUS approved

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Last modified March 27 05:34 EDT 2023. Contains 361554 sequences. (Running on oeis4.)