The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A200196 Number of -n..n arrays x(0..6) of 7 elements with zero sum, adjacent elements differing by more than one, and elements alternately increasing and decreasing 1
 0, 104, 1534, 9856, 40632, 127800, 334278, 765598, 1585416, 3034396, 5450616, 9293800, 15170448, 23863548, 36362438, 53897896, 77976766, 110422568, 153414642, 209534448, 281809258, 373763982, 489469484, 633600106, 811486280 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Row 7 of A200192 LINKS R. H. Hardin, Table of n, a(n) for n = 1..200 FORMULA Empirical: a(n) = 2*a(n-1) -a(n-3) -a(n-5) +a(n-6) -2*a(n-7) +2*a(n-8) +a(n-9) -a(n-13) -2*a(n-14) +2*a(n-15) -a(n-16) +a(n-17) +a(n-19) -2*a(n-21) +a(n-22) EXAMPLE Some solutions for n=5 .-3....1...-2....0...-2...-3....0...-1....3...-1...-1...-1....2...-4...-5...-2 ..2...-1....0....3....5....4....3...-3...-1....4....1...-4....4....0....0...-5 .-5....4...-2...-4...-4...-4...-3....4....2...-4...-4....3...-4...-3...-2....3 ..3...-4....5....5....1....5....1...-1...-3....4....3...-2...-1....5....3....1 .-3....2...-5...-5...-1...-2...-2....3....1...-3...-4....4...-4....1...-1....4 ..5...-2....3....5....2....5....2...-2...-4....5....4...-5....4....3....4...-3 ..1....0....1...-4...-1...-5...-1....0....2...-5....1....5...-1...-2....1....2 CROSSREFS Sequence in context: A340898 A132434 A187589 * A234219 A223420 A250325 Adjacent sequences: A200193 A200194 A200195 * A200197 A200198 A200199 KEYWORD nonn AUTHOR R. H. Hardin Nov 14 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified June 13 05:35 EDT 2024. Contains 373366 sequences. (Running on oeis4.)