261576
domain: N
Appears in sequences
- Number of aperiodic binary strings of length n; also number of binary sequences with primitive period n.at n=18A027375
- Row sums of triangle T(m,n) = number of solutions to 1 <= a(1) < a(2) < ... < a(m) <= n, where gcd(a(1), a(2), ..., a(m), n) = 1, in A020921.at n=17A038199
- Number of primitive (aperiodic) words of length n which contain exactly two different symbols.at n=17A056267
- Number of primitive (aperiodic) palindromes using a maximum of two different symbols.at n=35A056458
- Number of primitive (aperiodic) palindromes using exactly two different symbols.at n=35A056463
- Number of triangles similar to their n-th pedal, and not similar to any k-th pedal for k < n.at n=8A102536
- a(n) = AP(n) is the total number of aperiodic k-palindromes of n, 1 <= k <= n.at n=35A179781
- Number of 8-ary sequences with primitive period n.at n=6A218125
- Number of length 6 primitive (=aperiodic or period 6) n-ary words.at n=8A218130