A264453 Number of permutations of [n] with exactly four (possibly overlapping) occurrences of the generalized pattern 12-3.

2, 41, 492, 4851, 44291, 394154, 3502159, 31450283, 287335089, 2680535274, 25586566853, 250169461829, 2506738712869, 25745302689807, 270994937686871, 2922760610595872, 32288420619988347, 365214362676429903, 4227719744153328064, 50063651356822568135

Offset: 5

Author

Alois P. Heinz, Nov 14 2015

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 5..500

Crossrefs

Column k=4 of A260665.