26620

Appears in sequences

• Number of paraffins.at n=19A006009
• Triangle of coefficients in expansion of (1+11x)^n.at n=24A013618
• a(n) = T(n,n+1), where T is the array defined in A025564.at n=9A025567
• Number of partitions of n that do not contain 10 as a part.at n=39A027344
• Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*11^j.at n=13A038253
• Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*1^j.at n=24A038315
• Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*5^j.at n=11A038319
• Numbers k such that sopf(k) = d(k) where d(k) = A001223(k) and sopf(k) = A008472(k).at n=37A064010
• Number of nonisomorphic systems with n elements with one binary operation satisfying the equation B(AB)=A (semisymmetric quasigroups).at n=8A076017
• a(n) = ((n-th prime)^5-(n-th prime)^3)/6.at n=4A138435
• Number of permutations in S_n with major index equal to inversion number.at n=8A207018
• Triangle, read by rows, where T(n,k) = k!*C(n, k)*11^(n-k) for n>=0, k=0..n.at n=17A218018
• a(n) = n * (binomial(n + 1, 3) + 1).at n=20A329523
• a(n) = n * (7*binomial(n, 2) + 1).at n=20A329530
• a(n) = n*(1 - (-1)^n - 2*(3 + (-1)^n)*n^2 + 2*n^4)/384.at n=22A350689
• The pi-based arithmetic derivative applied to prime shift array: Square array A(n,k) = A258851(A246278(n,k)), read by falling antidiagonals.at n=70A356155
• Position in A356226 of first appearance of the n-th composition in standard order (row n of A066099).at n=44A356603