login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A186123
Number of (n+1)X5 binary arrays with every 2X2 subblock diagonal sum less antidiagonal sum equal to some horizontal or vertical neighbor 2X2 subblock diagonal sum less antidiagonal sum
1
50, 254, 946, 4254, 17794, 79782, 350266, 1574348, 7039308, 31791832, 143422488, 649853710, 2944761666, 13369773598, 60719993934, 276010194872, 1254976548136, 5708622661652, 25972110429080, 118188673239130, 537890728864526
OFFSET
1,1
COMMENTS
Column 4 of A186128
LINKS
FORMULA
Empirical: a(n)=13*a(n-1)-27*a(n-2)-313*a(n-3)+1360*a(n-4)+2960*a(n-5)-21942*a(n-6)-11823*a(n-7)+207082*a(n-8)-8597*a(n-9)-1365516*a(n-10)+273265*a(n-11)+6957547*a(n-12)-661483*a(n-13)-29271261*a(n-14)-5183365*a(n-15)+105123375*a(n-16)+53449823*a(n-17)-322792246*a(n-18)-264403445*a(n-19)+833623544*a(n-20)+917183114*a(n-21)-1771318700*a(n-22)-2500483447*a(n-23)+3014800837*a(n-24)+5679518352*a(n-25)-3928025864*a(n-26)-11068642898*a(n-27)+3449723643*a(n-28)+18652699704*a(n-29)-720507050*a(n-30)-27075919990*a(n-31)-4150074641*a(n-32)+33684461501*a(n-33)+9845557873*a(n-34)-36002318878*a(n-35)-14320175787*a(n-36)+33511328801*a(n-37)+15681313926*a(n-38)-27614165654*a(n-39)-13198975601*a(n-40)+20498342300*a(n-41)+7233225845*a(n-42)-14234922396*a(n-43)+1351829704*a(n-44)+9789428363*a(n-45)-10132487225*a(n-46)-7385233165*a(n-47)+15981020015*a(n-48)+7209995908*a(n-49)-17486996880*a(n-50)-9135579843*a(n-51)+14919288619*a(n-52)+11444925467*a(n-53)-9093755033*a(n-54)-11423688533*a(n-55)+2516202348*a(n-56)+8167361183*a(n-57)+1449757374*a(n-58)-3957191684*a(n-59)-2063583521*a(n-60)+1240084684*a(n-61)+1208640257*a(n-62)-212076992*a(n-63)-490905835*a(n-64)-65556295*a(n-65)+112985115*a(n-66)+117620104*a(n-67)+51984509*a(n-68)-76189430*a(n-69)-70949032*a(n-70)+39949387*a(n-71)+45626975*a(n-72)-17536162*a(n-73)-25550856*a(n-74)+4728478*a(n-75)+13766856*a(n-76)+2272908*a(n-77)-5218884*a(n-78)-2862290*a(n-79)+658554*a(n-80)+1147760*a(n-81)+206358*a(n-82)-177984*a(n-83)-90256*a(n-84)+4684*a(n-85)+11996*a(n-86)+200*a(n-87)-464*a(n-88)-96*a(n-89)+128*a(n-90) for n>92
EXAMPLE
Some solutions for 3X5
..0..0..1..1..0....0..0..0..1..1....1..1..0..0..1....1..0..0..1..1
..1..0..0..1..1....1..1..1..1..1....0..1..1..1..1....0..0..0..1..1
..0..0..1..1..0....1..1..1..0..0....0..1..1..1..0....0..1..1..1..0
CROSSREFS
Sequence in context: A235567 A091883 A091414 * A220864 A205355 A172519
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 13 2011
STATUS
approved