References to A061297

a(n) = Sum_{ r = 0 to n} L(n,r), where L(n,r) (A067049) = LCM (n, n-1, n-2, ..., n-r+1)/ LCM ( 1,2,3,...r).
1, 2, 4, 8, 14, 32, 39, 114, 166, 266, 421, 1608, 1005, 3980, 6894, 4206, 8666, 40904


1 seqfan posts

Sun Dec 28 18:50:04 CET 2008    [seqfan] An interesting coincidence

Index of A-numbers in seqfan: by ascending order    by month    by frequency    by keyword
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