144144

Appears in sequences

• Almost trivalent maps.at n=6A002012
• Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 19 (most significant digit on right).at n=38A029512
• Number of binary [ n,4 ] codes without 0 columns.at n=20A034345
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= n/3.at n=40A048002
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-1)/3.at n=40A048015
• Number of nonempty subsets of {1,2,...,n} in which exactly 5/6 of the elements are <= (n-2)/3.at n=40A048026
• Triangle read by rows, the Bell transform of n!*binomial(4,n) (without column 0).at n=41A049424
• a(n) = (4*n+10)(!^4)/10(!^4), related to A000407 ((4*n+2)(!^4) quartic, or 4-factorials).at n=4A051622
• Denominator of the n-th alternating harmonic number, Sum_{k=1..n} (-1)^(k+1)/k.at n=15A058312
• Coefficient triangle of certain polynomials N(4; m,x).at n=51A062264
• Number of permutations s of {1,2,...,n} such that |s(i)-i| for i=1,2,...,n are all distinct.at n=17A075866
• Denominator of Sum_{k=1..n} 1/(n+k).at n=7A082688
• a(n) = binomial(2n+1, n+1)*binomial(n+3, 3).at n=6A085374
• Triangle of coefficients of n-th degree interpolating polynomial to sqrt(x) multiplied by 4^n.at n=39A091764
• Square of Narayana triangle A001263: View A001263 as a lower triangular matrix. Then the square of that matrix is also lower triangular. Sequence gives this lower triangle, read by rows.at n=38A095801
• a(n) = binomial(n+6,6) * binomial(n+10,6).at n=3A103604
• a(n) = binomial(n+3,n)*binomial(n+7,n).at n=6A105250
• Denominator of Sum_{i=1..n} 1/(i*C(2*i,i)).at n=8A112100
• Where record values of A119791 occur.at n=32A119793
• Triangle T(n,k), 0 <= k <= n, defined by : T(n,k) = 0 if k < 0, T(0,k) = 0^k, (n+2)*(2*n-2*k+1)*T(n,k) = (2*n+1)*( 4*(2*n-2*k+1)*T(n-1,k-1) + (n+2*k+2)*T(n-1,k) ).at n=26A123382