A174426 Denominator of fractions in A171676.

4, 36, 36, 144, 144, 144, 400, 400, 400, 400, 900, 900, 900, 900, 900, 1764, 1764, 1764, 1764, 1764, 1764, 3136, 3136, 3136, 3136, 3136, 3136, 3136, 5184, 5184, 5184, 5184, 5184, 5184, 5184, 5184, 8100, 8100, 8100, 8100, 8100, 8100, 8100, 8100, 8100

Offset

0,1

Comments

(Antidiagonal writing) fractions are 3/4, 5/36,5/36, 7/144,7/144,7/144, . Numerator:A171676. Rydberg-Ritz.

Links

Table of n, a(n) for n=0..44.

Formula

n times A035287(n+2).

Crossrefs

Sequence in context: A374371 A144153 A027644 * A198642 A327998 A274891

Adjacent sequences: A174423 A174424 A174425 * A174427 A174428 A174429

Keyword

nonn,frac

Author

Paul Curtz, Nov 28 2010

Status

approved