The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A251428 T(n,k)=Number of length n+2 0..k arrays with the sum of the maximum minus twice the median plus the minimum of adjacent triples multiplied by some arrangement of +-1 equal to zero 14
 2, 9, 12, 16, 41, 12, 29, 116, 97, 40, 42, 237, 380, 341, 56, 61, 432, 1113, 1888, 1003, 144, 80, 725, 2532, 6589, 7458, 3129, 240, 105, 1128, 5097, 18952, 34893, 31980, 9439, 544, 130, 1641, 9120, 44465, 122452, 183341, 127566, 28717, 992, 161, 2316, 15449 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts ....2......9......16........29.........42.........61..........80..........105 ...12.....41.....116.......237........432........725........1128.........1641 ...12.....97.....380......1113.......2532.......5097........9120........15449 ...40....341....1888......6589......18952......44465.......94452.......180625 ...56...1003....7458.....34893.....122452.....349257......863840......1913597 ..144...3129...31980....183341.....791668....2647405.....7658288.....19250197 ..240...9439..127566....938895....4868362...19285211....64105154....183394583 ..544..28717..520568...4771117...29782800..137949185...526064608...1698285517 ..992..86695.2080650..24063611..179832500..976032575..4251906158..15488167451 .2112.261789.8370976.120999825.1084104408.6871688649.34199112972.140282803741 LINKS R. H. Hardin, Table of n, a(n) for n = 1..202 FORMULA Empirical for column k: k=1: a(n) = 2*a(n-1) +2*a(n-2) -4*a(n-3) k=2: [order 14] k=3: [order 29] Empirical for row n: n=1: a(n) = 2*a(n-1) -2*a(n-3) +a(n-4); also a polynomial of degree 2 plus a quasipolynomial of degree 0 with period 2 n=2: a(n) = a(n-1) +2*a(n-3) -a(n-4) -a(n-5) -a(n-6) -a(n-7) +2*a(n-8) +a(n-10) -a(n-11); also a polynomial of degree 3 plus a quasipolynomial of degree 1 with period 12 n=3: [order 38] EXAMPLE Some solutions for n=5 k=4 ..3....3....1....0....3....1....4....3....3....1....3....1....0....4....0....3 ..2....1....4....4....1....0....4....0....0....0....1....0....2....2....1....2 ..3....2....1....4....1....0....1....3....1....4....2....3....4....1....3....3 ..0....3....0....0....0....4....2....2....3....3....1....1....0....3....1....3 ..4....1....3....1....3....3....4....3....3....0....3....3....2....4....3....1 ..0....3....4....3....0....1....4....4....0....3....2....4....0....1....1....3 ..3....3....0....0....3....1....1....4....0....0....2....4....2....2....4....3 CROSSREFS Row 1 is A248434 Sequence in context: A103008 A124742 A152003 * A050855 A031070 A350630 Adjacent sequences:  A251425 A251426 A251427 * A251429 A251430 A251431 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Dec 02 2014 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 26 00:12 EDT 2022. Contains 354870 sequences. (Running on oeis4.)