18355

Appears in sequences

• Self-convolution of (1, p(1), p(2), ...).at n=24A023626
• For n weights, number of combinations when limited to two weights per pan.at n=20A037255
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the ratios of six simple musical tones: 8/7 5/4 4/3 3/2 8/5 7/4.at n=41A060526
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the ratios of 8 musical tones: 8/7 16/11 5/4 4/3 3/2 8/5 11/8 7/4.at n=40A060527
• A list of equal temperaments (equal divisions of the octave) whose nearest scale steps are closer and closer approximations to the ratios of three complementary pairs of simple musical tones: 7/6 and 12/7, 6/5 and 5/3 and 7/5 and 10/7.at n=30A060529
• Number of ordered triples (a, b, c) with gcd(a, b, c) = 1 and 1 <= {a, b, c} <= n.at n=27A071778
• Number of 8k+1 primes (A007519) in range ]2^n,2^(n+1)].at n=19A095009
• Equal divisions of the octave of decreasing seven-limit Pepper ambiguity.at n=13A117555
• Equal divisions of the octave of decreasing nine-limit Pepper ambiguity.at n=12A117556
• a(n) = floor((x^n - (1-x)^n)/sqrt(2)+ 1/2) where x = (sqrt(2)+1)/2.at n=53A136421
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 0), (-1, 1, 1), (1, 0, -1), (1, 0, 1)}.at n=9A148765
• Number of ways to split a strict integer partition of n into consecutive subsequences with weakly decreasing sums.at n=42A319794