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A029584 Expansion of cos x + tan x + sec x. 1

%I

%S 2,1,0,2,6,16,60,272,1386,7936,50520,353792,2702766,22368256,

%T 199360980,1903757312,19391512146,209865342976,2404879675440,

%U 29088885112832,370371188237526,4951498053124096,69348874393137900

%N Expansion of cos x + tan x + sec x.

%C a(2n) = 2*A012007(n), a(2n+1) = A000182(n+1).

%K nonn

%O 0,1

%A _N. J. A. Sloane_.

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Last modified November 18 07:01 EST 2018. Contains 317279 sequences. (Running on oeis4.)