20084

Appears in sequences

• Expansion of 1/(1-x^4-x^5-x^6-x^7-x^8-x^9-x^10-x^11-x^12-x^13-x^14).at n=37A017836
• Numerator of 4 * H(n,4,3), a generalized harmonic number.at n=4A074637
• Number of 2 X 2 matrices having all terms in {-n,...,0,..,n} and determinant >= 3n.at n=7A211153
• a(n+5) = a(n+4)+a(n+3)+a(n+2)+a(n+1)+2*a(n) with a(0)=2, a(1)=1, a(2)=5, a(3)=10, a(4)=20.at n=14A226311
• Number of (n+2) X (1+2) 0..1 arrays with every 2 X 2 and 3 X 3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally and vertically.at n=29A253503
• Sum of the largest parts of the partitions of n into 8 squarefree parts.at n=46A326452
• Indices of records in A307730.at n=38A348449