30584

Appears in sequences

• a(n) = 2*a(n-1) + a(n-2) + n.at n=11A117585
• a(n)=(n^4-n^3-n^2-n)/2.at n=16A171129
• 2^(n-1) - floor((2^(n-1) - 1)/(n-1)).at n=14A213255
• a(n) = (n-1)*a(n-1) - a(n-2) + (n-2)*a(n-3) with a(0)=0, a(1)=a(2)=1.at n=9A269450
• Triangle read by rows giving the sum of the number of k-matchings of the graphs obtained by deleting one edge and its two vertices from the ladder graph L_n = P_2 X P_n in all possible ways.at n=48A318243
• Numbers whose square and cube taken together contain each decimal digit at least twice.at n=19A363909