170616

Appears in sequences

• Coefficient of x in the reduction by x^2->x+1 of the polynomial p(n,x) defined at Comments.at n=17A193007
• Number of n X 6 0..1 arrays with rows and columns lexicographically nondecreasing read forwards, and nonincreasing read backwards.at n=8A201373
• a(3)=5, a(4)=8, a(5)=12; thereafter a(n) = a(n-1) + A000931(n+7).at n=34A220885