A291715 a(n) = 420*(preferred ratios of room width / height in Alberti's Ten Books on Architecture).

210, 252, 280, 315, 336, 350, 360, 420

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Radislav Zuk, From Renaissance Musical Proportions to Polytonality in Twentieth Century Architecture, Chapter 38 in Volume 1 of K. Williams and M. J. Ostwald (eds.), Architecture and Mathematics from Antiquity to the Future, DOI 10.1007/978-3-319-00137-1_38, Springer International Publishing Switzerland 2015

Example

a(5)=336 is in the sequence, because the height / width ratio of 420 / 336 corresponds to the preferred ratio of H:W = 5:4 provided in the table given in A291713.

Crossrefs

Cf. A291713, A291714, A291719.

Sequence in context: A220441 A025392 A025383 * A116200 A125011 A119427

Adjacent sequences: A291712 A291713 A291714 * A291716 A291717 A291718

Keyword

nonn,fini,full

Author

Hugo Pfoertner, Sep 01 2017

Status

approved