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Eigensequence of A053121.
0

%I #9 Sep 21 2024 02:27:06

%S 1,1,1,2,4,9,22,56,152,428,1257,3827,12023,38975,129801,443833,

%T 1554849,5572334,20409121,76283610,290737945,1128730320,4460079331,

%U 17924115817,73207479057,303691230784,1278796858227,5462983288161,23664467118878,103895077228910

%N Eigensequence of A053121.

%F a(n) = Sum_{k=0..n-1} A053121(n-1,k)*a(k) for n>0 with a(0)=1.

%Y Cf. A053121.

%K nonn

%O 0,4

%A _Philippe Deléham_, Jun 16 2007

%E More terms from _Jason Yuen_, Sep 20 2024