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A102475 a(n) = floor(Pi^(n/2)). 4
1, 1, 3, 5, 9, 17, 31, 54, 97, 172, 306, 542, 961, 1704, 3020, 5353, 9488, 16817, 29809, 52835, 93648, 165986, 294204, 521463, 924269, 1638224, 2903677, 5146633, 9122171, 16168627, 28658145, 50795241, 90032220, 159577956, 282844563, 501328935, 888582403 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..36.

MATHEMATICA

Floor[Pi^(Range[0, 40]/2)] (* Harvey P. Dale, Aug 27 2012 *)

CROSSREFS

Cf. A000796, A102477.

Sequence in context: A289261 A143373 A282184 * A066173 A114322 A000213

Adjacent sequences:  A102472 A102473 A102474 * A102476 A102477 A102478

KEYWORD

nonn

AUTHOR

Jun Mizuki (suzuki32(AT)sanken.osaka-u.ac.jp), Feb 24 2005

EXTENSIONS

a(0)=1 prepended by Alois P. Heinz, Feb 27 2019

STATUS

approved

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Last modified October 16 13:51 EDT 2019. Contains 328093 sequences. (Running on oeis4.)