32730

Appears in sequences

• Number of aperiodic binary strings of length n; also number of binary sequences with primitive period n.at n=15A027375
• 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=14A038199
• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to complement.at n=15A045663
• Number of primitive (aperiodic) words of length n which contain exactly two different symbols.at n=14A056267
• Number of similarity classes of vectors with minimal Ducci period n.at n=14A269795
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 149", based on the 5-celled von Neumann neighborhood.at n=36A270319
• Number of 4 X n binary matrices that are "primitive"; that is, they cannot be expressed as a "tiling" by a smaller matrix.at n=2A291070
• Triangle read by rows: T(n,k) (3 <= k < n) gives number of solutions to certain 1-loop scattering equations refined by MHV degree.at n=29A294735
• Triangle read by rows: T(n,k) (3 <= k < n) gives number of solutions to certain 1-loop scattering equations refined by MHV degree.at n=34A294735
• Table read by antidiagonals where A(n,k) is the number of n X k aperiodic binary arrays.at n=23A323860
• Table read by antidiagonals where A(n,k) is the number of n X k aperiodic binary arrays.at n=25A323860
• Table read by antidiagonals where A(n,k) is the number of n X k binary arrays in which both the sequence of rows and the sequence of columns are (independently) aperiodic.at n=23A323862
• Table read by antidiagonals where A(n,k) is the number of n X k binary arrays in which both the sequence of rows and the sequence of columns are (independently) aperiodic.at n=25A323862