420394

Appears in sequences

• 4-dimensional figurate numbers: a(n) = (5*n-1)*binomial(n+2,3)/4.at n=37A002418
• Number of n X 5 binary arrays without the pattern 0 1 diagonally or vertically.at n=27A188839
• a(n) = C(n) * d(n), where C(n) is the Catalan number and d(n) is the sorting probability of the Catalan poset P_n.at n=14A335212
• Expansion of Sum_{k>0} x^(2*k)/(1+x^k)^6.at n=33A363614