This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A210082 Number of (n+1)X5 0..3 arrays containing all values 0..3 with every 2X2 subblock having one, three or four distinct values, and new values 0..3 introduced in row major order 1
 9405, 2718363, 735082380, 198214365329, 53426795638847, 14400521616297866, 3881469256766776348, 1046198451409469003484, 281988882426835921498964, 76006354002581988645981865, 20486502156045158804853536455 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A210086 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 FORMULA Empirical: a(n) = 357*a(n-1) -24956*a(n-2) +287902*a(n-3) +26074079*a(n-4) -902939413*a(n-5) +1277468261*a(n-6) +399614425317*a(n-7) -6321060969799*a(n-8) -24184081408184*a(n-9) +1587694606642173*a(n-10) -12981021635371611*a(n-11) -72434732281423272*a(n-12) +1851336712434285028*a(n-13) -8298795143833957130*a(n-14) -55370910495748475918*a(n-15) +699885760777699195037*a(n-16) -1271589380489406898905*a(n-17) -16850531904836117165732*a(n-18) +97437529757163175050052*a(n-19) +48421575192093992037435*a(n-20) -1974487710666877857698347*a(n-21) +4494801106206276016732911*a(n-22) +15972527052167522580745893*a(n-23) -85997411174773544395221229*a(n-24) +8070664493704334395329420*a(n-25) +710134757867676419060179075*a(n-26) -1161429886184152718241829591*a(n-27) -2761558002058205806660337818*a(n-28) +9607464701171282796386424036*a(n-29) +1672650823286895899011692366*a(n-30) -38888570744662356012685589228*a(n-31) +29594770811521649020052740416*a(n-32) +85957722600879503060086236632*a(n-33) -132835061319571827563642760504*a(n-34) -91415452353353247701405254720*a(n-35) +282171566706458815056468521216*a(n-36) -6031025209778057302947810368*a(n-37) -346443281245790759531269100096*a(n-38) +139125028729243971214443853952*a(n-39) +252488578502803235293338745600*a(n-40) -172347974003740353484283547648*a(n-41) -104528726263890830851423499264*a(n-42) +103392729149084501549131203584*a(n-43) +21426153350278051580162213888*a(n-44) -33786660119662982226892468224*a(n-45) -1224295150346030527568994304*a(n-46) +6066487242636218074798030848*a(n-47) -214584923867248084083081216*a(n-48) -569047585790917406986076160*a(n-49) +30222671766403263944196096*a(n-50) +24646600389530110604083200*a(n-51) -800959542877582339866624*a(n-52) -383347881721865554624512*a(n-53) EXAMPLE Some solutions for n=4 ..0..0..0..1..1....0..1..0..0..0....0..1..0..1..0....0..0..0..0..0 ..0..0..0..2..0....0..2..1..3..2....0..2..1..2..1....1..2..3..2..3 ..3..1..2..3..2....1..1..3..0..3....3..2..3..0..1....0..2..1..0..1 ..2..1..3..0..2....2..3..0..1..0....1..1..1..2..1....2..1..3..2..1 ..0..1..0..1..3....2..1..3..2..0....2..3..0..1..3....3..0..3..1..0 CROSSREFS Sequence in context: A183796 A183733 A290424 * A064587 A275922 A173194 Adjacent sequences:  A210079 A210080 A210081 * A210083 A210084 A210085 KEYWORD nonn AUTHOR R. H. Hardin Mar 17 2012 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified December 9 22:27 EST 2019. Contains 329880 sequences. (Running on oeis4.)