245357

Appears in sequences

• a(n)=9*a(n-1)-7*a(n-2), a(0)=1, a(1)=7 .at n=6A147839
• Column 4 of triangle A152798; a(n) = A152798(n+4,4).at n=10A152809
• Number of (binary) heaps where n is the sum of their length and the size of the element set [k].at n=16A373632