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Search: id:A122045
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| A122045 |
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Euler (or secant) numbers E(n). |
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+0
9
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| 1, 0, -1, 0, 5, 0, -61, 0, 1385, 0, -50521, 0, 2702765, 0, -199360981, 0, 19391512145, 0, -2404879675441, 0, 370371188237525, 0, -69348874393137901, 0, 15514534163557086905, 0, -4087072509293123892361, 0, 1252259641403629865468285, 0, -441543893249023104553682821
(list; graph; listen)
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OFFSET
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0,5
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COMMENT
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The convention in the OEIS is that the alternate zeros are normally omitted in such sequences. See A000364 for the official version of this sequence.
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MAPLE
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seq(euler(n) , n=0..31); [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 15 2009]
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MATHEMATICA
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Table[EulerE[n], {n, 0, 30}]
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PROGRAM
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(Other) SAGE: [euler_number(i) for i in range(31)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Mar 15 2009]
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CROSSREFS
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Cf. A000364, A028296.
Sequence in context: A070611 A047769 A103709 this_sequence A073911 A157302 A036946
Adjacent sequences: A122042 A122043 A122044 this_sequence A122046 A122047 A122048
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KEYWORD
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sign
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AUTHOR
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Roger Bagula (rlbagulatftn(AT)yahoo.com), Sep 13 2006
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EXTENSIONS
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Edited by N. J. A. Sloane (njas(AT)research.att.com), Sep 17 2006
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