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!)
 A239854 Number of nX4 0..3 arrays with no element equal to zero plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or one plus the sum of the elements antidiagonally to its northeast, modulo 4 1
 6, 12, 78, 203, 484, 1757, 4979, 19850, 68830, 207822, 799573, 2488921, 8261626, 29985170, 94570580, 336674607, 1151293607, 3775219224, 13467393979, 44587173533, 151997573760, 528796519331, 1751682284364, 6079087768020 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 4 of A239858 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 EXAMPLE Some solutions for n=4 ..2..3..3..2....3..2..3..2....2..3..3..2....2..3..3..2....3..2..3..2 ..3..1..1..3....2..1..2..3....3..1..1..3....3..1..1..3....2..1..2..3 ..3..1..1..3....3..2..2..2....2..3..2..2....3..1..1..3....3..0..2..2 ..2..3..2..2....2..3..0..2....2..0..1..0....3..2..3..3....3..1..1..2 CROSSREFS Sequence in context: A163342 A107904 A071930 * A061520 A305058 A220232 Adjacent sequences:  A239851 A239852 A239853 * A239855 A239856 A239857 KEYWORD nonn AUTHOR R. H. Hardin, Mar 28 2014 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 14 12:04 EST 2019. Contains 329979 sequences. (Running on oeis4.)