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A160515
Decimal expansion of the integer (640320^3 + 744)^2 * 70^2 = 337736875876935471466319632507953926400.
3
3, 3, 7, 7, 3, 6, 8, 7, 5, 8, 7, 6, 9, 3, 5, 4, 7, 1, 4, 6, 6, 3, 1, 9, 6, 3, 2, 5, 0, 7, 9, 5, 3, 9, 2, 6, 4, 0, 0
OFFSET
39,1
COMMENTS
640320^3 + 744 is an integer that is very close to Ramanujan's constant e^(Pi*sqrt(163)) = 640320^3 + 743.99999999999925 and 70^2 is related to the norm vector 0 of the hyperbolic version of the Leech lattice since 1^2 + 2^2 + 3^3 + ... + 22^2 + 23^2 + 24^2 = 70^2.
337736875876935471466319632507953926400 = 2^8*3^2*5^2*7^2*10939058860032031^2 and 10939058860032031 is a prime number that can be decomposed to 2^15*3^2*5^3*23^3*29^3 + 31.
FORMULA
Equals Product_{i=1..5} A160514(i).
MATHEMATICA
IntegerDigits[(640320^3 + 744)^2*70^2] (* Michael De Vlieger, Dec 19 2015 *)
CROSSREFS
Sequence in context: A359947 A201932 A161771 * A105670 A283996 A374187
KEYWORD
nonn,cons,fini,full
AUTHOR
Mark A. Thomas, May 16 2009
EXTENSIONS
Partially edited by R. J. Mathar, May 30 2009
Edited by N. J. A. Sloane, Dec 24 2010
STATUS
approved