60398

Appears in sequences

• Hoggatt sequence with parameter d=4.at n=7A005362
• a(n) = A055450(n, n-4).at n=9A055454
• Numbers n such that the sum of smallest prime factors of numbers from 1 to n is divisible by n.at n=16A088824
• Triangle read by rows: row n (n >= 0) consists of the elements g(i, n-i) (0 <= i <= n), where g(r,s) = 1 + Sum_{k=1..r} Product_{i=0..k-1} binomial(r+s-1, s+i) / binomial(r+s-1, i).at n=73A116925
• Beginning of a run of 4 consecutive Niven (or Harshad) numbers.at n=15A141769
• Number of n X 2 binary arrays with no element equal to the sum mod 3 of its horizontal and vertical neighbors.at n=15A183364
• Number of n X 3 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 and every value increasing by 0 or 1 with every step right, diagonally se or down.at n=10A253006
• Diagonal of the Euler-Seidel matrix for the Catalan numbers.at n=5A283298
• Expansion of Product_{k>=1} (1 + Lucas(k)*x^k).at n=16A318263
• a(n) = Sum_{k=0..floor(n/4)} |Stirling1(n - 3*k,n - 4*k)|.at n=21A357932