A237032 Number of (n+1) X (5+1) 0..2 arrays with the maximum of every 2 X 2 subblock equal.

225731, 93224611, 34552648978, 13403891066319, 5114994760537075, 1964124791456164266, 752460086062505325739, 288520409604104379625859, 110593066864108799679962914, 42396728137403307046581314455

Offset

1,1

Comments

Column 5 of A237035.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = 239*a(n-1) +68893*a(n-2) -3662412*a(n-3) -687308133*a(n-4) +34037698933*a(n-5) +1708507881498*a(n-6) -92484388661103*a(n-7) -1035324071395221*a(n-8) +65859399371514100*a(n-9) +419538138168849781*a(n-10) -15416248415949894541*a(n-11) -95854598013494291697*a(n-12) +1056551768470881954384*a(n-13) +4194533173372967579360*a(n-14) -36404027727720292273920*a(n-15) -18250939243060664183040*a(n-16) +465027089550957918842880*a(n-17) -830339708989308767846400*a(n-18) +26271035870258095718400*a(n-19) +791433293544015003648000*a(n-20) -268111354279860633600000*a(n-21) -168154961622356459520000*a(n-22) +33389274530190458880000*a(n-23).

Example

Some solutions for n=1:
..1..0..0..0..2..2....1..0..1..2..1..0....0..0..0..0..2..1....2..0..2..2..2..2
..2..1..2..0..2..1....2..2..1..2..2..1....2..2..2..0..0..1....1..1..2..0..1..2

Crossrefs

Cf. A237035.

Sequence in context: A204743 A048427 A203922 * A067141 A234775 A187598

Adjacent sequences: A237029 A237030 A237031 * A237033 A237034 A237035

Keyword

nonn

Author

R. H. Hardin, Feb 02 2014

Status

approved