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Search: id:A012473
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A012473 sech(cos(x)*log(x+1))=1-1/2!*x^2+3/3!*x^3+6/4!*x^4-60/5!*x^5... +0
1
1, 0, -1, 3, 6, -60, 0, 2310, -10752, -84168, 1152240, 2453880, -154467192, 797768400, 16907851688, -250017997320, -1746679208128, 77446551835648, -318565680255360, -18241668233387712, 262053618149070080 (list; graph; listen)
OFFSET

0,4

CROSSREFS

Sequence in context: A045914 A067610 A067609 this_sequence A058161 A012877 A103066

Adjacent sequences: A012470 A012471 A012472 this_sequence A012474 A012475 A012476

KEYWORD

sign

AUTHOR

Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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