150516

Appears in sequences

• Number of 7 X (n+1) 0..1 arrays with every 2 X 2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..1 introduced in row major order.at n=15A208088
• Number of ways to write n as an ordered sum of 9 primes (counting 1 as a prime).at n=19A341988