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 A248489 T(n,k)=Number of length n+5 0..k arrays with some three disjoint pairs in each consecutive six terms having the same sum 13
 22, 183, 22, 724, 183, 22, 2125, 844, 183, 22, 4986, 2605, 988, 183, 22, 10147, 6306, 3301, 1156, 183, 22, 18568, 13147, 8370, 4285, 1348, 183, 22, 31449, 24208, 17923, 11586, 5641, 1564, 183, 22, 50110, 40449, 33520, 25495, 16566, 7465, 1804, 183, 22 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .22.183..724..2125...4986..10147..18568...31449...50110...76111..111132..157093 .22.183..844..2605...6306..13147..24208...40449...64030...96391..139212..195013 .22.183..988..3301...8370..17923..33520...55665...87310..129991..185340..256861 .22.183.1156..4285..11586..25495..48808...81225..126358..186091..261804..358693 .22.183.1348..5641..16566..37519..73868..124113..192162..280595..390064..528557 .22.183.1564..7465..24210..56635.114924..196089..303554..441061..607596..815527 .22.183.1804..9865..35832..87071.182304..317153..493206..715865..980740.1306771 .22.183.2284.14005..54024.139671.300546..526637..827332.1200933.1639214.2176671 .22.183.2860.19945..82222.223939.498444..884525.1403330.2041155.2782532.3685341 .22.183.3532.28315.125918.358353.827778.1495083.2395314.3497273.4771996.6309277 LINKS R. H. Hardin, Table of n, a(n) for n = 1..1507 FORMULA Empirical for column k: k=1: a(n) = a(n-1) k=2: a(n) = a(n-1) k=3: a(n) = a(n-1) +4*a(n-6) -4*a(n-7) k=4: [order 37] Empirical for row n: n=1: a(n) = 4*a(n-1) -5*a(n-2) +5*a(n-4) -4*a(n-5) +a(n-6); also a quartic polynomial plus a constant quasipolynomial with period 2 n=2: [order 12; also a quartic polynomial plus a linear quasipolynomial with period 12] n=3: [order 31; also a quartic polynomial plus a linear quasipolynomial with period 840] n=4: [order 45] EXAMPLE Some solutions for n=6 k=4 ..2....2....3....4....2....4....0....2....2....4....0....2....2....3....3....3 ..3....0....1....3....0....0....2....4....0....2....2....3....2....2....2....2 ..4....2....2....0....0....2....4....3....3....2....2....4....1....2....1....1 ..4....4....1....4....2....3....1....3....0....0....3....4....3....3....1....2 ..2....2....2....1....1....1....3....1....3....3....1....3....4....1....0....0 ..3....2....0....0....1....2....2....2....1....1....1....2....0....1....2....4 ..2....2....0....4....2....4....3....2....2....1....3....2....2....3....3....3 ..3....0....1....3....3....3....2....1....0....2....2....3....2....2....2....2 ..1....2....2....0....3....2....4....3....3....2....2....4....1....2....1....1 ..1....4....1....4....2....3....4....3....0....3....3....1....3....3....1....2 ..2....2....2....1....4....4....3....1....3....0....1....0....4....4....3....0 CROSSREFS Sequence in context: A126517 A197496 A107969 * A248490 A191012 A248491 Adjacent sequences:  A248486 A248487 A248488 * A248490 A248491 A248492 KEYWORD nonn,tabl AUTHOR R. H. Hardin, Oct 07 2014 STATUS approved

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Last modified September 26 09:05 EDT 2021. Contains 347664 sequences. (Running on oeis4.)