OFFSET
0,3
LINKS
Michael Dairyko, Lara Pudwell, Samantha Tyner, Casey Wynn, Non-contiguous pattern avoidance in binary trees. Electron. J. Combin. 19 (2012), no. 3, Paper 22, 21 pp. MR2967227.
Index entries for linear recurrences with constant coefficients, signature (1,1,2,3,2,1).
MATHEMATICA
LinearRecurrence[{1, 1, 2, 3, 2, 1}, {1, 1, 2, 5, 12, 26}, 40] (* Harvey P. Dale, Dec 19 2014 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 01 2013
STATUS
approved