A091132 - OEIS

A091132

Decimal expansion of e^2 - 2e.

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

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

OFFSET

1,2

COMMENTS

Average length of the 2nd increasing run in a random permutation of n integers as n->Infinity.

REFERENCES

Donald E. Knuth, The Art of Computer Programming, Vol. 3: Sorting and Searching, 2nd ed., Reading, MA: Addison-Wesley, 1998, p. 40.

François Le Lionnais, Les Nombres Remarquables, Paris, Hermann, 1983, p. 42.

LINKS

Table of n, a(n) for n=1..102.

Eric Weisstein's World of Mathematics, Permutation.

FORMULA