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A092425 Decimal expansion of Pi^4. 21
9, 7, 4, 0, 9, 0, 9, 1, 0, 3, 4, 0, 0, 2, 4, 3, 7, 2, 3, 6, 4, 4, 0, 3, 3, 2, 6, 8, 8, 7, 0, 5, 1, 1, 1, 2, 4, 9, 7, 2, 7, 5, 8, 5, 6, 7, 2, 6, 8, 5, 4, 2, 1, 6, 9, 1, 4, 6, 7, 8, 5, 9, 3, 8, 9, 9, 7, 0, 8, 5, 5, 4, 5, 6, 8, 2, 7, 1, 9, 6, 1, 9, 0, 1, 2, 1, 8, 6, 7, 2, 3, 4, 7, 5, 2, 9, 9, 2, 5, 5 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

2,1

LINKS

Harry J. Smith, Table of n, a(n) for n = 2..20000

FORMULA

Pi^4 = 120 * Sum(j>=1, Sum(i=1..j-1, 1/(i*j)^2)). - Enrique Pérez Herrero, Jun 29 2012

EXAMPLE

97.40909103400243723644033268870511124972758567268542169146785938997085...

MATHEMATICA

RealDigits[Pi^4, 10, 100][[1]] (* G. C. Greubel, Mar 09 2018 *)

PROG

(PARI) { default(realprecision, 20080); x=Pi^4/10; for (n=2, 20000, d=floor(x); x=(x-d)*10; write("b092425.txt", n, " ", d)); } \\ Harry J. Smith, Jun 22 2009

(MAGMA) R:= RealField(150); (Pi(R))^4; // G. C. Greubel, Mar 09 2018

(MAGMA) R:=RealField(110); SetDefaultRealField(R); n:=Pi(R)^4; Reverse(Intseq(Floor(10^98*n))); // Bruno Berselli, Mar 12 2018

CROSSREFS

Cf. A000796 (Pi), A002388 (Pi^2), A091925 (Pi^3), A092731 (Pi^5), A092732 (Pi^6), A092735 (Pi^7), A092736 (Pi^8), A058286 (continued fraction).

Sequence in context: A105532 A111471 A078527 * A019647 A011115 A019886

Adjacent sequences:  A092422 A092423 A092424 * A092426 A092427 A092428

KEYWORD

cons,easy,nonn

AUTHOR

Mohammad K. Azarian, Mar 22 2004

STATUS

approved

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Last modified August 21 14:53 EDT 2018. Contains 313954 sequences. (Running on oeis4.)