1100386

Appears in sequences

• Triangular number x such that x + reverse of x is a prime.at n=26A072387
• Triangular numbers representable as triangular(x)*triangular(y)+1.at n=31A226389
• a(n) = (m(n)^2 + 3)*(m(n)^2 + 7)/32, where m(n) = 2*n - 1.at n=38A336535