25954

Appears in sequences

• Numbers k such that 85*2^k+1 is prime.at n=21A032392
• Number of partitions satisfying cn(1,5) < cn(2,5) + cn(3,5) and cn(4,5) < cn(2,5) + cn(3,5).at n=42A039888
• Numbers k such that k | sigma_11(k).at n=38A055715
• a(n) = T(n,n-6), array T as in A055807.at n=13A055811
• Sixth convolution of Schroeder's (second problem) numbers A001003(n), n>=0.at n=6A111994
• Triangle T(n,k) read by rows: the coefficient [x^k] of the product_{s=1..n} (x+16*cos(s*Pi/(2n+1))^4), 0<=k<=n.at n=39A179837
• Number of (n+1)X4 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=4A184075
• Number of (n+1)X6 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=2A184077
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=23A184081
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=25A184081
• Number of distinct lines passing through 3 or more points in an n X n grid.at n=28A225606
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 0 and no antidiagonal sum 0 and no row sum 2 and no column sum 2.at n=20A255224
• a(n) = Sum_{i=0..n} (2^(i)*(-1)^(i+n)*C(n,i)*C(2*n+i-1,n-1)).at n=5A259554
• Length of n-th run of consecutive primes in A375564.at n=17A376195