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A203644 Number of arrays of n 0..13 integers with new values introduced in order 0..13 but otherwise unconstrained. 1

%I #7 Dec 02 2023 14:40:57

%S 1,2,5,15,52,203,877,4140,21147,115975,678570,4213597,27644437,

%T 190899322,1382958544,10480142026,82864861847,682076428809,

%U 5832727748374,51723682798067,474855882753977,4506342616999876,44142711725983660

%N Number of arrays of n 0..13 integers with new values introduced in order 0..13 but otherwise unconstrained.

%H R. H. Hardin, <a href="/A203644/b203644.txt">Table of n, a(n) for n = 1..210</a>

%F Empirical: a(n) = 92*a(n-1) -3809*a(n-2) +93808*a(n-3) -1530243*a(n-4) +17419116*a(n-5) -141963107*a(n-6) +835933384*a(n-7) -3542188936*a(n-8) +10614910592*a(n-9) -21727767984*a(n-10) +28528276608*a(n-11) -21289201920*a(n-12) +6706022400*a(n-13).

%Y Column 13 of A203647.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 04 2012

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Last modified April 25 10:01 EDT 2024. Contains 371967 sequences. (Running on oeis4.)