63535

Appears in sequences

• Composite numbers k such that (k+1)*sigma(k) is a perfect square.at n=14A073586
• a(n) = 44*n^2 - 1.at n=37A158628
• Numbers n such that 41#*2^n-1 is prime, where # denotes the primorial, A002110.at n=86A176061
• Number of (n+2)X(4+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=5A255087
• Number of (n+2)X(6+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=3A255089
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with no 3x3 subblock diagonal sum 1 and no antidiagonal sum 2 and no row sum 0 and no column sum 0.at n=39A255091
• Irregular table: n-th row polynomial given by the formal power series expansion of Sum_{k >= 0} (1 + q)^(n*k + k*(k+1)/2)* Product_{j = 1..k} (1 - (1 + q)^j), n >= 1.at n=46A340880