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A199638 Last number in row n of triangle A199636. 1

%I

%S 5,3,21,13,85,53,341,227,1365,909,5461,3637,21845,14563,87381,58253,

%T 349525,233013,1398101,932067,5592405,3728269,22369621,14913077,

%U 89478485,59652323,357913941,238609293,1431655765,954437173,5726623061,3817748707,22906492245

%N Last number in row n of triangle A199636.

%C This sequence appears to satisfy a(n) = 4*a(n-2) + a(n-6) - 4*a(n-8). It also appears that a(2n) = A002450(n).

%K nonn

%O 4,1

%A _T. D. Noe_, Nov 14 2011

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Last modified July 25 12:15 EDT 2021. Contains 346290 sequences. (Running on oeis4.)