A153064 - OEIS

A153064

a(n) = floor(b(n)) where b(-1)=2, b(n)=b(n-1)^2-n^b(n-1).

2, 4, 15, -32543, 1059046848

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OFFSET

-1,1

COMMENTS

a(4) ~ -5.3069609889*10^637609736, and is too large for display. - D. S. McNeil, Nov 28 2010

LINKS

MATHEMATICA

a=2; lst={}; Do[a=a^2-n^a; AppendTo[lst, Floor[a]], {n, 0, 3}]; lst

PROG

(PARI) print1(a=2); for(n=0, 3, print1(", "floor(a=a^2-n^a)))

CROSSREFS

KEYWORD

sign

AUTHOR

EXTENSIONS

Definition clarified by R. J. Mathar and M. F. Hasler, Nov 27 2010

STATUS

approved