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!)
 A233975 Number of (n+1)X(2+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 13 1
 1308, 8688, 59440, 453988, 3530540, 29109544, 242057156, 2076801776, 17846457644, 156102689488, 1362078980924, 12021030945444, 105617021379536, 935901861178016, 8248332405909040, 73223590427438656, 646231370548255396 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Column 2 of A233980 LINKS R. H. Hardin, Table of n, a(n) for n = 1..210 R. H. Hardin, Empirical recurrence of order 62 FORMULA Empirical recurrence of order 62 (see link above) EXAMPLE Some solutions for n=3 ..6..3..0....2..1..0....5..1..5....3..2..4....1..1..5....1..4..3....3..4..2 ..2..4..2....0..4..0....3..2..3....2..6..3....5..2..1....2..0..4....2..6..5 ..3..6..3....4..3..2....1..5..1....3..2..4....1..1..5....1..4..3....3..2..6 ..2..2..4....1..5..1....1..2..3....5..1..0....5..2..3....2..0..2....1..5..6 CROSSREFS Sequence in context: A106815 A325605 A281211 * A209853 A165936 A242606 Adjacent sequences:  A233972 A233973 A233974 * A233976 A233977 A233978 KEYWORD nonn AUTHOR R. H. Hardin, Dec 18 2013 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 15 17:03 EST 2019. Contains 330000 sequences. (Running on oeis4.)