login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Sequence a_{t_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where a_n = A129878, t_n = A129875.
0

%I #5 Mar 30 2013 04:47:35

%S 0,1,3,3,10,13,47,59

%N Sequence a_{t_n} arising in enumeration of arrays of directed blocks (see Quaintance reference for precise definition), where a_n = A129878, t_n = A129875.

%D Jocelyn Quaintance, Combinatoric Enumeration of Two-Dimensional Proper Arrays, Discrete Math., 307 (2007), 1844-1864.

%F See Quaintance reference for generating functions that produce A129872-A129886.

%K nonn,more

%O 1,3

%A _N. J. A. Sloane_, May 26 2007