27036

Appears in sequences

• Numbers n such that reverse(n) = phi(n) (mod n).at n=12A072392
• Defining sequence for an inverse Fredholm-Rueppel triangle.at n=26A104977
• a(n) = A108462(A025487(n)).at n=22A108463
• Number of imprimitive (periodic) n-bead necklaces with beads of 2 colors when turning over is allowed.at n=40A115119
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (0, 0, -1), (0, 1, 0), (1, 0, 1)}.at n=9A149946
• Number A(n,k) of k-partite partitions of {n}^k into k-tuples; square array A(n,k), n>=0, k>=0, read by antidiagonals.at n=31A219727
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 718", based on the 5-celled von Neumann neighborhood.at n=43A273427
• Number of n-gonal inositol homologs with 2 kinds of achiral proligands.at n=9A283846
• Number of (3*n) X n matrices with nonnegative integer entries and each column sum being 3 up to permutation of rows.at n=4A322487
• Irregular triangle read by rows where T(n,k) is the number of multiset partitions of a multiset with d = A027750(n,k) copies of each integer from 1 to n/d.at n=31A322786
• a(n) = number of non-orientable genus 3 maps with n edges.at n=6A348804
• Sum of the middle parts of the partitions of k into 3 parts for all 0 <= k <= n.at n=46A348919
• Triangle read by rows: T(n,k) is the number of n edge non-orientable genus k maps.at n=17A380235