19446

Appears in sequences

• T(n+3,3) with T as in A036355.at n=10A036682
• Starting positions of strings of three 9's in the decimal expansion of Pi.at n=19A083642
• Starting positions of strings of four 9's in the decimal expansion of Pi.at n=5A083643
• Starting positions of strings of five 9's in the decimal expansion of Pi.at n=2A083644
• Position of the first occurrence of exactly n consecutive '9's in a row in the decimal expansion of Pi.at n=4A096763
• Number of n X 7 1..2 arrays containing at least one of each value, all equal values connected, rows considered as a single number in nondecreasing order, and columns considered as a single number in nondecreasing order.at n=9A166812
• Numbers k such that 2^(k-1)+2*k-1 is a prime number.at n=14A192764
• Record (maximal) gaps between prime triples (p, p+4, p+6).at n=34A201596
• Number of nX3 0..2 arrays with no more than floor(nX3/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.at n=3A222850
• Number of nX4 0..2 arrays with no more than floor(nX4/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.at n=2A222851
• T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.at n=17A222853
• T(n,k)=Number of nXk 0..2 arrays with no more than floor(nXk/2) elements equal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order.at n=18A222853
• Number of length n+2 0..5 arrays with the medians of every three consecutive terms nondecreasing.at n=3A250137
• T(n,k)=Number of length n+2 0..k arrays with the medians of every three consecutive terms nondecreasing.at n=31A250140
• Number of length 4+2 0..n arrays with the medians of every three consecutive terms nondecreasing.at n=4A250143
• Numbers k such that 6*R_k + 7*10^k + 1 is prime, where R_k = 11...11 is the repunit (A002275) of length k.at n=9A259133
• Positions of Fibonacci numbers in ordered sequence A160009 of all products of Fibonacci numbers.at n=49A272948
• a(n) = n!*LaguerreL(n, -8*n).at n=3A277422
• Number of set-systems on n vertices whose dual is a weak antichain.at n=4A326968