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A012359 sec(tan(x)*log(x+1))=1+12/4!*x^4-60/5!*x^5+570/6!*x^6-3780/7!*x^7... 0
1, 0, 0, 0, 12, -60, 570, -3780, 43680, -447552, 6232200, -82861680, 1313835336, -21072521184, 381305512224, -7156099161120, 146595771528960, -3138961332436864, 71962899144642240 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..18.

MATHEMATICA

With[{nn=20}, CoefficientList[Series[Sec[Tan[x]Log[x+1]], {x, 0, nn}], x]Range[0, nn]!] (* Harvey P. Dale, Nov 25 2012 *)

CROSSREFS

Sequence in context: A012702 A009163 A012706 * A012707 A108096 A056388

Adjacent sequences:  A012356 A012357 A012358 * A012360 A012361 A012362

KEYWORD

sign

AUTHOR

Patrick Demichel (patrick.demichel(AT)hp.com)

STATUS

approved

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Last modified July 6 11:37 EDT 2022. Contains 355110 sequences. (Running on oeis4.)