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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A223876 T(n,k)=Number of nXk 0..3 arrays with rows, diagonals and antidiagonals unimodal 10
 4, 16, 16, 50, 256, 64, 130, 2500, 4096, 256, 296, 16900, 99223, 65536, 1024, 610, 87616, 1336985, 3863372, 1048576, 4096, 1163, 372100, 12520369, 88682677, 152918517, 16777216, 16384, 2083, 1352569, 90648289, 1271992512, 5941888105 (list; table; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Table starts .......4............16................50..................130 ......16...........256..............2500................16900 ......64..........4096.............99223..............1336985 .....256.........65536...........3863372.............88682677 ....1024.......1048576.........152918517...........5941888105 ....4096......16777216........6066668157.........411716468431 ...16384.....268435456......240345697904.......28928809433978 ...65536....4294967296.....9519219712534.....2033941972287214 ..262144...68719476736...377068749332794...142745781634483746 .1048576.1099511627776.14936662560715369.10010372252279889400 LINKS R. H. Hardin, Table of n, a(n) for n = 1..97 FORMULA Empirical for column k: k=1: a(n) = 4*a(n-1) k=2: a(n) = 16*a(n-1) k=3: [recurrence of order 28] Empirical: rows n=1..4 are polynomials of degree 6*n for k>0,0,1,10 EXAMPLE Some solutions for n=3 k=4 ..0..0..0..1....0..0..0..3....0..2..3..3....0..0..0..2....0..0..0..0 ..2..2..2..3....2..2..3..3....2..2..3..1....0..2..2..2....0..0..0..3 ..2..3..1..1....0..1..2..3....1..1..3..1....2..2..2..1....1..1..3..1 CROSSREFS Column 1 is A000302 Column 2 is A001025 Row 1 is A223659 Row 2 is A223756 Sequence in context: A223850 A223663 A224113 * A223801 A336938 A232516 Adjacent sequences: A223873 A223874 A223875 * A223877 A223878 A223879 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 28 2013 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 August 7 07:35 EDT 2024. Contains 375008 sequences. (Running on oeis4.)