684475

Appears in sequences

• Numbers k such that k^2 is formed from two subsquares that overlap in a single digit.at n=34A048422
• a(n)^2 is a square composed of three '2 digit' overlapping subsquares.at n=3A048428
• Number of ways to split 1, 2, 3, ..., 5n into n arithmetic progressions each with 5 terms.at n=16A104431
• Expansion of x^6*(1 + x^3)/(1 - 4*x + 5*x^2 - x^3 - 2*x^4 + x^6 + x^7 - 2*x^8 + x^9).at n=19A290989