Number of permutations containing exactly one occurrence of the pattern #, with # one of {1-23, 3-21, 12-3, 32-1}.
A092923
Number of permutations containing exactly one occurrence of the pattern #, with # one of {1-23, 3-21, 12-3, 32-1}.
Terms
- a(0) =1a(1) =7a(2) =39a(3) =211a(4) =1168a(5) =6728a(6) =40561a(7) =256297a(8) =1696707a(9) =11752973a(10) =85047284a(11) =641782220a(12) =5041634549a(13) =41160207335a(14) =348664792199
External references
- oeis: A092923