Number of alternating permutations of order n.
1, 2, 4, 10, 32, 122, 544, 2770, 15872, 101042, 707584, 5405530, 44736512
Index of A-numbers in seqfan: by ascending order
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13 seqfan posts
Tue May 22 06:54:26 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Sun May 20 20:27:21 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Sun May 20 09:21:20 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Sat May 19 18:13:07 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Fri May 4 13:50:27 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Fri May 4 03:02:54 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Fri May 4 09:44:22 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Fri May 4 06:00:04 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Fri May 4 00:27:32 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Thu May 3 00:26:17 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Thu May 3 01:33:20 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Thu May 3 00:00:29 CEST 2012 [seqfan] Re: A001250, A001251, A001252, A001253 counting permutations
Wed May 2 22:37:12 CEST 2012 [seqfan] A001250, A001251, A001252, A001253 counting permutations
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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