42752

Appears in sequences

• Expansion of 1/sqrt(1-4x-8x^2-24x^3+36x^4).at n=7A108490
• Numbers k such that k*(k+9) gives the concatenation of two numbers m and m-9.at n=2A116231
• Triangle T(n,k) of number of labeled directed multigraphs (with loops), without isolated vertices, with n arrows and k vertices (n = 1,2,.., k = 1..2*n).at n=33A120945
• a(n) is the smallest composite number having the same base-n digits (both type and quantity) as the primes and greater-than-one exponents in its factorization.at n=24A281335
• Accumulation triangle of A360603 read by rows.at n=31A360860