a(n) = 1/40320 8^n + 1/1440 6^n + 1/360 5^n + 1/64 4^n + 11/180 3^n + 53/288 2^n + 103/280 Partial sum of Stirling numbers of second kind S(n,i), i=1..8 (i.e. a(n)=sum_{i=1..8}S(n,i)).
1, 2, 5, 15, 52, 203, 877, 4140, 21146, 115929, 677359, 4189550, 27243100
6 seqfan posts
Fri Aug 28 19:26:06 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Fri Aug 28 12:47:22 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Fri Aug 28 05:18:02 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Fri Aug 28 04:24:15 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Fri Aug 28 01:14:12 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Fri Aug 28 00:44:39 CEST 2009 [seqfan] Re: number of different digit patterns of n-digit numbers
Index of A-numbers in seqfan: by ascending order
by month
by frequency
by keyword
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