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A138807 Let M = 2 X 2 matrix [0, 1; 1, Pi]; then a(n) = 0 if n=0, 1 if n=1; and otherwise a(n) = floor(M^(n-1)[2,2]). 0
0, 1, 3, 10, 37, 128, 439, 1508, 5179, 17779, 61033, 209522, 719266, 2469165, 8476377, 29098491, 99891986, 342918422, 1177201983, 4041207525, 13873029857, 47624616207, 163490174266, 561244146614 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..23.

EXAMPLE

a(2) = 3 since M^1 = matrix [0, 1; 1, Pi], and the (2,2) entry is Pi, with floor(Pi)=3.

CROSSREFS

Sequence in context: A337341 A080625 A289615 * A149043 A296000 A242725

Adjacent sequences:  A138804 A138805 A138806 * A138808 A138809 A138810

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Mar 30 2008

EXTENSIONS

Corrected by N. J. A. Sloane, Oct 27 2019 at the suggestion of Harvey P. Dale.

STATUS

approved

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Last modified October 1 04:06 EDT 2020. Contains 337441 sequences. (Running on oeis4.)