A157290 - OEIS

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A157290

Decimal expansion of 105/Pi^4.

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

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OFFSET

1,3

COMMENTS

The Product_{p = primes = A000040} (1+1/p^4), the quartic analog to A082020.

REFERENCES

Calvin C. Clawson, Mathematical Mysteries: The Beauty and Magic of Numbers, Springer, 2013. See p. 230.

LINKS

Table of n, a(n) for n=1..105.

Index entries for transcendental numbers

FORMULA

Equals A013662/A013666 = Product_{i>=1} (1+1/A030514(i)).