[seqfan] Angry Recurrences
Ron Hardin
rhhardin at att.net
Sat Feb 1 22:25:32 CET 2014
https://oeis.org/A236949
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum of every 2X2 subblock equal
has recurrences that grow large coefficients faster than any I recall (and growing in degree if anything unusually slowly)
Empirical for column k:
k=1: a(n) = 16*a(n-1) -650*a(n-3) +596*a(n-4) +5184*a(n-5) -1365*a(n-6) -3780*a(n-7)
k=2: [order 10]
k=3: [order 13]
k=4: [order 22]
k=5: [order 34]
k=6: [order 55]
k=7: [order 88]
The k=7 recurrence has coefficients up to about 10^170.
https://oeis.org/A236948/a236948.txt
rhhardin at mindspring.com
rhhardin at att.net (either)
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