22764

Appears in sequences

• Maximal planar degree sequences with n nodes.at n=15A007020
• a(n) = n^3 + n^2 + n.at n=28A027444
• Triangle of D-analogs of Stirling numbers of the 2nd kind.at n=51A039760
• Triangle of D-analogs of Stirling numbers of the 2nd kind.at n=48A039761
• a(n) = Sum_{k=0..floor(n/4)} C(n-3*k,k+1).at n=30A098578
• Structured pentakis dodecahedral numbers (vertex structure 6).at n=13A100173
• a(n) = n*A002088(n).at n=41A143270
• Arises in covering a graph by forests and a matching.at n=19A179259
• a(n) = n*(n^3+n^2+2*n+1).at n=12A186636
• Principal diagonal of the convolution array A213553.at n=6A213554
• Number T(n,k) of ascent sequences of length n with exactly k flat steps; triangle T(n,k), n>=0, 0<=k<=n, read by rows.at n=58A242153
• Number of ascent sequences of length n with exactly three flat steps.at n=6A242156
• Non-repdigit numbers k that divide A045876(k).at n=11A276413
• a(n) is the position of the first occurrence of n^3 in the concatenation of the positive integers in decimal representation.at n=18A290787
• Positive integers that have exactly ten representations of the form 1 + p1 * (1 + p2* ... * (1 + p_j)...), where [p1, ..., p_j] is a (possibly empty) list of distinct primes.at n=24A317400
• G.f. = Phi^5*F, where Phi = g.f. for A028930, F = g.f. for A028959.at n=14A328532
• a(n) = n! * Sum_{k=1..n} ( Sum_{d|k} d^(k/d + 1) )/k.at n=5A353992