120528

Appears in sequences

• Number of n X n arrays of squares of integers with every 3X3 subblock summing to 14.at n=2A159214
• Number of n X n arrays of squares of integers with every (n-2)X(n-2) subblock summing to 14.at n=1A159394
• Numbers with prime factorization pq^4r^5.at n=21A190468
• a(n) = c(2n-1), where c(n+2) = Sum_{k=0..n} binomial(n,k)c(k)c(n+1-k) with c(0)=0, c(1)=3.at n=4A289070