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A069853 Numerators of coefficients in sinh(x)/sin(x) power series. 4
1, 1, 1, 13, 17, 97, 1247, 4937, 6673, 1058467, 1380290071, 3216636877, 536799743, 8113510922983, 448402165451, 39917099698166381, 841245146920202183, 1449011221261558349, 5272145758556532286373, 59293985401199969565319 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..20.

CROSSREFS

Cf. A069854.

Bisection of A007418.

Sequence in context: A214393 A060569 A108265 * A175791 A289866 A210547

Adjacent sequences:  A069850 A069851 A069852 * A069854 A069855 A069856

KEYWORD

easy,frac,nonn

AUTHOR

Benoit Cloitre, May 03 2002

STATUS

approved

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Last modified September 16 12:41 EDT 2019. Contains 327113 sequences. (Running on oeis4.)