68256

Appears in sequences

• Numbers m with property that m-th triangular number is a sum of divisors of some k-th triangular number (A175849).at n=17A175850
• Numbers k such that (88*10^k - 1)/3 is prime.at n=20A293537
• Consider coefficients U(m,L,k) defined by the identity Sum_{k=1..L} Sum_{j=0..m} A302971(m,j)/A304042(m,j) * k^j * (T-k)^j = Sum_{k=0..m} (-1)^(m-k) * U(m,L,k) * T^k that holds for all positive integers L,m,T. This sequence gives 3-column table read by rows, where the n-th row lists coefficients U(2,n,k) for k = 0, 1, 2; n >= 1.at n=15A316349
• Expansion of x*(31 + 326*x + 336*x^2 + 26*x^3 + x^4) / (1 - x)^6.at n=5A316457