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A205630 Number of 6X(n+1) 0..2 arrays with every 2X2 subblock in a row having an equal number of equal diagonal or equal antidiagonal elements, adjacent rows differing in this number, and new values 0..2 introduced in row major order 1
11808, 92934, 992088, 13072068, 188139156, 2832970656, 43439036364, 672276656388, 10450256282808, 162882874790436, 2543257118701860, 39766092440174736, 622520114559849660, 9755915902019642964 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Row 5 of A205626
LINKS
FORMULA
Empirical: a(n) = 56*a(n-1) -954*a(n-2) -2269*a(n-3) +240136*a(n-4) -1701662*a(n-5) -20228632*a(n-6) +296349114*a(n-7) +406017684*a(n-8) -23688266344*a(n-9) +55980892936*a(n-10) +1116722340304*a(n-11) -5594690005680*a(n-12) -32385952624448*a(n-13) +268502806367328*a(n-14) +506256637012704*a(n-15) -8319373514093440*a(n-16) +589600357991168*a(n-17) +180566384876610048*a(n-18) -246993350083107328*a(n-19) -2829888689012115456*a(n-20) +6928291306540437504*a(n-21) +32142673031573659648*a(n-22) -115844580745981829120*a(n-23) -257443537640646475776*a(n-24) +1360723963325803724800*a(n-25) +1302856127710858444800*a(n-26) -11847726391651735044096*a(n-27) -1913020913876241743872*a(n-28) +78248886577099317444608*a(n-29) -31674364879410045124608*a(n-30) -395698900989536773341184*a(n-31) +337642969315615508004864*a(n-32) +1532639847437703793606656*a(n-33) -1920268114482951001997312*a(n-34) -4507801611678556237070336*a(n-35) +7506452392229383268466688*a(n-36) +9851854571909233214750720*a(n-37) -21472665716721445622513664*a(n-38) -15232197627812472216879104*a(n-39) +45824794739499364218044416*a(n-40) +14511811336096955704016896*a(n-41) -73035824502335994217889792*a(n-42) -3168917387549082891845632*a(n-43) +85983755272096662329229312*a(n-44) -13317099356912952327274496*a(n-45) -73093029814374183211106304*a(n-46) +22097200337153421062701056*a(n-47) +43189763780740721418436608*a(n-48) -17840280800055747875438592*a(n-49) -16648465641613376247300096*a(n-50) +8251645621466979926802432*a(n-51) +3723745651371103299305472*a(n-52) -2066272838085418791469056*a(n-53) -363087263602825104457728*a(n-54) +215162822875748210049024*a(n-55)
EXAMPLE
Some solutions for n=4
..0..0..0..1..0....0..0..1..2..1....0..0..0..0..0....0..0..0..0..0
..0..1..0..0..0....1..2..1..0..0....1..0..2..0..1....0..0..0..0..0
..0..2..2..2..1....2..2..2..1..0....1..0..1..0..2....1..2..2..2..1
..2..1..2..1..1....0..1..0..1..0....0..0..0..2..1....2..2..0..2..2
..2..0..2..0..2....0..0..2..0..2....2..1..1..2..0....1..1..1..1..1
..1..2..1..2..2....1..1..1..1..2....0..2..1..1..2....1..1..1..1..1
CROSSREFS
Sequence in context: A210151 A278193 A031868 * A205332 A223296 A110846
KEYWORD
nonn
AUTHOR
R. H. Hardin Jan 29 2012
STATUS
approved

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Last modified April 16 04:02 EDT 2024. Contains 371696 sequences. (Running on oeis4.)