Number of permutations of 1..n avoiding adjacent step pattern up, down, up.
1, 2, 6, 19, 70, 331, 1863, 11637, 81110, 635550, 5495339, 51590494, 524043395
4 seqfan posts
Sun May 16 17:09:31 CEST 2010 [seqfan] Re: Primes embedded
Fri May 14 14:29:43 CEST 2010 [seqfan] Re: Duplicates? A177729 A177517 A177516
Fri May 14 13:30:09 CEST 2010 [seqfan] Re: Duplicates? A177729 A177517 A177516
Fri May 14 12:40:31 CEST 2010 [seqfan] Duplicates? A177729 A177517 A177516
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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