18189

Appears in sequences

• Not necessarily symmetric n X 3 crossword puzzle grids.at n=5A034184
• Number of partitions satisfying cn(1,5) + cn(4,5) < cn(2,5) + cn(3,5).at n=41A039892
• Denominators of continued fraction convergents to sqrt(449).at n=10A041855
• Lucky numbers that are the sum of the first k primes for some k.at n=10A046286
• Terms of A007504 divisible by 3.at n=28A249679
• Number of nX4 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=6A281340
• Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=3A281343
• T(n,k)=Number of nXk 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=48A281344
• T(n,k)=Number of nXk 0..1 arrays with no element equal to more than three of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=51A281344
• Array read by antidiagonals: T(m,n) is the number of fixed polyominoes that have a width of m and height of n.at n=30A292357
• Array read by antidiagonals: T(m,n) is the number of fixed polyominoes that have a width of m and height of n.at n=33A292357
• Number of nX5 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=5A297990
• Number of nX6 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=4A297991
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=49A297993
• T(n,k)=Number of nXk 0..1 arrays with every element equal to 1, 2, 3 or 6 king-move adjacent elements, with upper left element zero.at n=50A297993
• Odd numbers k that can be factored to such a pair of coprime factors x and y that A347381(k) < min(A347381(x), A347381(y)).at n=12A347390
• Irregular triangular array T; row n shows the coefficients of the (n-1)-st polynomial in the obverse convolution s(x)**t(x), where s(x) = n^2 x and t(x) = 2x+1. See Comments.at n=23A375042
• Antidiagonal sums of A382310.at n=38A382311