1420916

Appears in sequences

• Number of compositions of 7*n-5 into parts 6 and 7.at n=21A373937
• a(n) = Sum_{k=0..floor(n/2)} binomial(k+2,3*n-6*k+2).at n=45A390035
• Expansion of 1 / ((1-x)^6 - x^7).at n=19A392547