73458

Appears in sequences

• a(n) = n + n*(n-1)*(n-2)*(n-3).at n=18A001094
• a(n) = Sum_{ d >= 1, d divides n} (-1)^(n-d)*d^3.at n=39A008457
• a(n) = floor(C(n,4)/5).at n=56A011795
• Slowest increasing sequence with its first 10 digits all different one from another, then the next 10, then the next 10, etc.at n=32A106604
• Number of n X n binary arrays with all ones connected only in a 0111-1100-0111 pattern in any orientation.at n=8A147368
• Number of n X n binary arrays symmetric under horizontal and vertical reflection with all ones connected only in a 0111-1100-0111 pattern in any orientation.at n=19A147370
• Number of nondecreasing -n..n vectors of length 3 whose dot product with some other -n..n vector equals 3.at n=38A226342
• a(n) = binomial(5n+6, 4)/5 for n >= 0.at n=10A238471
• Heinz number of the omega-sequence of n!.at n=11A325275
• Expansion of e.g.f. Sum_{k>=1} (exp(x) - 1)^k / (k * (1 - (exp(x) - 1)^k)).at n=6A330353
• a(n) = Sum_{k=1..n} binomial(k+3,3) * floor(n/k).at n=32A366985
• G.f. A(x) satisfies 13*x = Sum_{n=-oo..+oo} (-1)^n * x^(13*n) * (A(x) + x^n)^(13*n) with A(0) = 1.at n=5A380686