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

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A223801 T(n,k)=Number of nXk 0..3 arrays with rows and antidiagonals unimodal 12
 4, 16, 16, 50, 256, 64, 130, 2500, 4096, 256, 296, 16900, 110116, 65536, 1024, 610, 87616, 1658703, 4816168, 1048576, 4096, 1163, 372100, 16979881, 151310069, 210163664, 16777216, 16384, 2083, 1352569, 131295500, 2844578252, 13602542576 (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............110116..............1658703 .....256.........65536...........4816168............151310069 ....1024.......1048576.........210163664..........13602542576 ....4096......16777216........9169032476........1216562667529 ...16384.....268435456......400006582368......108631485025292 ...65536....4294967296....17450517286804.....9695922803812530 ..262144...68719476736...761287955888788...865293308203272685 .1048576.1099511627776.33211580867804324.77218182866179219113 LINKS R. H. Hardin, Table of n, a(n) for n = 1..198 FORMULA Empirical for column k: k=1: a(n) = 4*a(n-1) k=2: a(n) = 16*a(n-1) k=3: [order 10] k=4: [order 27] Empirical: rows n=1..6 are polynomials of degree 6*n for k>0,0,0,0,2,3 EXAMPLE Some solutions for n=3 k=4 ..0..0..0..3....0..0..1..1....0..2..3..3....0..2..3..1....0..2..1..1 ..1..2..2..3....0..2..3..3....2..2..2..0....0..0..0..0....2..2..2..3 ..1..1..3..2....0..1..1..2....2..1..0..0....0..0..2..3....2..2..1..0 CROSSREFS Column 1 is A000302 Column 2 is A001025 Row 1 is A223659 Row 2 is A223756 Sequence in context: A223663 A224113 A223876 * A336938 A232516 A220109 Adjacent sequences: A223798 A223799 A223800 * A223802 A223803 A223804 KEYWORD nonn,tabl AUTHOR R. H. Hardin Mar 27 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.)