21039

Appears in sequences

• Numerators of continued fraction convergents to sqrt(340).at n=10A041642
• 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=42A060527
• Expansion of (1-x)/(1+2*x^2-x^3).at n=25A078035
• Number of binary sequences of length n with no subsequence 01110.at n=15A118891
• Number of n X n binary arrays symmetric about main diagonal with all ones connected only in a 1000-1100-0111 pattern in any orientation.at n=10A146392
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1000-1100-0111 pattern in any orientation.at n=22A146394
• Number of n X n binary arrays symmetric about the diagonal and under 90 degree rotation with all ones connected only in a 1000-1100-0111 pattern in any orientation.at n=23A146394
• 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), (0, 1, -1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.at n=7A151154
• a(n) is the smallest number k such that d(1)*1! + d(2)*2! + ... + d(p)*p! = n^2, where d(i) are the decimal digits of k.at n=33A198095
• Numbers n such that 7n is a partition number.at n=16A222175
• Number of integer partitions of n with at least two but not all parts having a common divisor greater than 1.at n=36A303139
• Number of partitions of n with rank a multiple of 7.at n=47A363239