A220911 Matchings avoiding the pattern 132.

1, 1, 3, 14, 84, 595, 4750, 41541, 390566, 3895957, 40835749, 446475634, 5063092427, 59282989982, 714081785678, 8821809194321, 111497133471808, 1438600278753167, 18914553873419637, 253017056507051876, 3438813481812082962, 47430059072002670873, 663174089700143765780

Offset: 0

Author

N. J. A. Sloane, Jan 03 2013

Keywords

• nonn

Links

• Andrew Elvey Price, Table of n, a(n) for n = 0..28
• Jonathan Bloom and Sergi Elizalde, Pattern avoidance in matchings and partitions, arXiv preprint arXiv:1211.3442 [math.CO], 2012. See Table 1.

Crossrefs

Cf. A220910.

Extensions

a(11)-a(22) from Andrew Elvey Price, Feb 13 2024

a(0)=1 prepended by Alois P. Heinz, Feb 13 2024