64351

Appears in sequences

• a(n) = ((n^6 - (n-1)^6) - (n^2 - (n-1)^2))/60.at n=14A079547
• Expansion of x*(1 + 4*x + 6*x^2 + 6*x^3)/((1-x)*(1 - 11*x^2 - 12*x^3)).at n=8A122058
• a(n+1) = a(n) + n*a(n-1) - a(n-2) + a(n-3).at n=12A170941
• Number of ways to place 3 nonattacking zebras on a 3 X n board.at n=24A172221
• Greatest number (in decimal representation) with n nonprime substrings in base-4 representation (substrings with leading zeros are considered to be nonprime).at n=15A217114
• Triangle read by rows: distribution of adjacent transpositions in involutions.at n=42A217876
• a(n) = n^4/8 + (5*n^3)/12 - n^2/8 - (5*n)/12 + 1.at n=27A226639
• Number of subsets of {1..n} containing n and some element equal to the sum of two other (possibly equal) elements.at n=17A365070