45914

Appears in sequences

• Number of positive integers <= 10^n that are divisible by no prime exceeding 13.at n=10A106629
• Number of ways to place 3 nonattacking kings on a 3 X n board.at n=23A172202
• Antiharmonic numbers using anti-divisors: numbers n such that sigma*(n) divides sigma*_2(n), where sigma*(n) is the sum of anti-divisors of n and sigma*_2(n) the sum of squares of anti-divisors of n.at n=16A192286
• Number of (n+1) X 3 0..2 arrays with permanents of 2 X 2 subblocks differing from horizontal and vertical neighbor permanents.at n=2A205287
• Number of (n+1)X4 0..2 arrays with permanents of 2X2 subblocks differing from horizontal and vertical neighbor permanents.at n=1A205288
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with permanents of 2X2 subblocks differing from horizontal and vertical neighbor permanents.at n=7A205293
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with permanents of 2X2 subblocks differing from horizontal and vertical neighbor permanents.at n=8A205293
• Triangle read by rows: T(n,k) is the number of sequences in which the games of a fully symmetric single-elimination tournament with 2^n teams can be played if arbitrarily many arenas are available and the number of distinct times at which games are played is k, 1 <= k <= 2^n-1.at n=16A380166