A152042 - OEIS

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A152042

Decimal expansion of an "almost Pi" BBP type solution in base 24: the sum of (21/(6 n + 1) + 15/(12 n + 1) - 9/(12 n + 5) + 30/(12 n + 7) - 1/(4 n + 1))/(12 * 24^n) over all n >= 0.

3, 1, 4, 1, 5, 9, 3, 8, 2, 9, 9, 8, 4, 1, 9, 5, 1, 1, 7, 0, 6, 0, 6, 5, 3, 3, 4, 4, 1, 6, 6, 7, 8, 2, 5, 8, 5, 1, 6, 3, 8, 7, 2, 1, 4, 8, 0, 4, 8, 7, 7, 4, 7, 9, 4, 5, 4, 5, 4, 8, 0, 0, 3, 6, 3, 0, 8, 7, 6, 9, 9, 2, 0, 0, 5, 7, 7, 9, 6, 1, 4, 0, 0, 1, 0, 7

(list; constant; graph; refs; listen; history; text; internal format)

OFFSET

1,1

LINKS

Table of n, a(n) for n=1..86.

MATHEMATICA

a=Sum[((1/24^n)*(5/(12*n + 1) - 1/(12*n + 2) - 4/(12 n + 3) -

3/(12*n + 5) + 4/(12*n + 7)) +

3*(1/24^n)*(5/(12*n + 2) + 1/(12 n + 3) + 2/(12*n + 7)))/4, {n, 0, Infinity}]; Table[Mod[Floor[a*10^n], 10], {n, 0, 200}]

CROSSREFS

Sequence in context: A068089 A374322 A068079 * A057466 A187079 A086183

Adjacent sequences: A152039 A152040 A152041 * A152043 A152044 A152045

KEYWORD

nonn,cons,less

AUTHOR

Roger L. Bagula, Nov 21 2008

STATUS

approved