25164

Appears in sequences

• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the six simple ratios of musical harmony: 6/5, 5/4, 4/3, 3/2, 8/5 and 5/3.at n=24A054540
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to four of the simple ratios of musical harmony: 5/4, 4/3, 3/2 and 8/5.at n=27A060525
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the 7 pairs of complementary target ratios needed to express the 12 unsymmetrical steps of the untempered (Just Intonation) scale known as the Duodene: 3/2 and 4/3, 5/4 and 8/5, 6/5 and 5/3, 9/8 and 16/9, 10/9 and 9/5, 16/15 and 15/8 and 45/32 and 64/45.at n=33A061920
• Equal divisions of the octave of decreasing 5-limit Pepper ambiguity.at n=14A117554
• Number of reduced words of length n in Coxeter group on 3 generators S_i with relations (S_i)^2 = (S_i S_j)^5 = I.at n=15A163314
• Numbers k such that k^3 +/- k +/- 1 are prime for all four possibilities.at n=3A236764
• Number of partitions p of n such that (number of even numbers in p) > (number of odd numbers in p).at n=45A241640
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 185", based on the 5-celled von Neumann neighborhood.at n=31A270636
• Numbers m > 0 that have a divisor d > 1 with binomial(m+d, d) == 1 mod m.at n=43A290040
• Number of partitions of n with ten parts in which no part occurs more than twice.at n=36A320598
• a(n) is the smallest number that can be partitioned into n ways as the sum of two Moran numbers.at n=39A337862
• a(n) = Sum_{k=0..n} 2^k * A000041(k) * A000009(n-k).at n=9A347829
• Viggo Brun's ternary continued fraction algorithm applied to { log 2, log 3/2, log 5/4 } produces a list of triples (p,q,r); sequence gives p values.at n=25A359742
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381600.at n=50A381592