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A061464 Denominator of 1 + 1/(2^2) + 1/(3^3) + ... 1/(n^n). 2
1, 1, 4, 108, 6912, 21600000, 583200000, 480290277600000, 31476303632793600000, 16727798278915463577600000, 52274369621610823680000000000, 14914487726878692033020558868480000000000 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..11.

EXAMPLE

1, 5/4, 139/108, 8923/6912,...

MAPLE

summ := 0; for n from 1 to 15 do printf("%d ", denom(summ)); if (1 = 1) then summ := summ + 1/n^n: end if; od;

MATHEMATICA

Join[{1}, Denominator/@Table[Sum[1/i^i, {i, n}], {n, 12}]] (* Harvey P. Dale, Jul 03 2011 *)

CROSSREFS

Cf. A061463.

Sequence in context: A123056 A024263 A090205 * A107048 A269187 A185702

Adjacent sequences:  A061461 A061462 A061463 * A061465 A061466 A061467

KEYWORD

nonn,frac,easy

AUTHOR

Amarnath Murthy, May 04 2001

EXTENSIONS

More terms from Winston C. Yang (winston(AT)cs.wisc.edu), May 19 2001

a(12) from Harvey P. Dale, Jul 03 2011

STATUS

approved

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Last modified September 24 09:10 EDT 2021. Contains 347630 sequences. (Running on oeis4.)