cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A200150 Number of 0..4 arrays x(0..n-1) of n elements with zero n-1st difference.

This page as a plain text file.
%I A200150 #6 Jul 22 2025 15:41:31
%S A200150 1,5,13,41,103,275,685,2525,5221,13897,32717,176145,321963,1390895,
%T A200150 2223445,3845743,10539177,76756525,147653093,808935605,934179307
%N A200150 Number of 0..4 arrays x(0..n-1) of n elements with zero n-1st difference.
%C A200150 Column 4 of A200154
%e A200150 Some solutions for n=6
%e A200150 ..1....1....4....1....2....1....2....4....2....1....1....0....2....1....4....3
%e A200150 ..2....0....1....1....1....2....1....0....1....4....1....2....3....4....1....2
%e A200150 ..2....2....2....4....3....3....1....2....1....1....3....1....4....3....1....3
%e A200150 ..2....4....2....4....3....4....1....4....2....0....4....1....3....2....2....2
%e A200150 ..2....4....1....1....1....4....1....4....3....2....3....2....1....2....3....0
%e A200150 ..1....1....4....1....2....1....2....4....2....1....1....0....2....1....4....3
%K A200150 nonn
%O A200150 1,2
%A A200150 _R. H. Hardin_ Nov 13 2011

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.