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A102477 a(n) = ceiling(Pi^(n/2)). 4
1, 2, 4, 6, 10, 18, 32, 55, 98, 173, 307, 543, 962, 1705, 3021, 5354, 9489, 16818, 29810, 52836, 93649, 165987, 294205, 521464, 924270, 1638225, 2903678, 5146634, 9122172, 16168628, 28658146, 50795242, 90032221, 159577957, 282844564, 501328936, 888582404 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

MATHEMATICA

Ceiling[Pi^(Range[0, 40]/2)] (* Harvey P. Dale, May 28 2015 *)

CROSSREFS

Cf. A000796, A102475.

Sequence in context: A175941 A317536 A203175 * A232582 A018074 A288465

Adjacent sequences:  A102474 A102475 A102476 * A102478 A102479 A102480

KEYWORD

nonn,changed

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 March 24 11:46 EDT 2019. Contains 321448 sequences. (Running on oeis4.)