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A029584 Expansion of cos x + tan x + sec x. +0
2
2, 1, 0, 2, 6, 16, 60, 272, 1386, 7936, 50520, 353792, 2702766, 22368256, 199360980, 1903757312, 19391512146, 209865342976, 2404879675440, 29088885112832, 370371188237526, 4951498053124096, 69348874393137900 (list; graph; listen)
OFFSET

0,1

COMMENT

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

CROSSREFS

Adjacent sequences: A029581 A029582 A029583 this_sequence A029585 A029586 A029587

Sequence in context: A059084 A145490 A070677 this_sequence A136255 A159813 A157409

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com).

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Last modified November 9 12:23 EST 2009. Contains 166233 sequences.


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