20093

Appears in sequences

• Molien series for alternating group Alt_8 (or A_8).at n=46A008631
• Revert transform of 2*x*(1 - x - x^3)-x/(1+x).at n=8A049172
• Number of simple unlabeled n-node graphs with 1 center node.at n=8A052437
• n-th Bell number of type D: Number of symmetric partitions of {-n,...,n}\{0} such that none of the subsets is of the form {j,-j}.at n=6A086365
• Positions of the records in A089294. First integer requiring a larger prime in its representation by (signed) sums of squares of distinct primes than all preceding integers.at n=11A089295
• Smallest number m such that prime(n) is a factor of both m and sigma(m).at n=19A156099
• Number of partitions of n with distinct numbers of odd and even parts.at n=37A171967
• Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00010101 or 01010101.at n=8A261287
• Triangle read by rows: T(n,k) is the number of simple connected graphs on n nodes with k center nodes.at n=36A294525
• Number of totally transitive rooted trees with n leaves.at n=15A318187
• Number of self-complementary set partitions of {1, ..., n} with no singletons.at n=14A324013
• Number of vertices formed in a square by straight line segments when connecting the four corner vertices to the points dividing the sides into n equal parts.at n=34A355949
• Number of 1-sided strip polyominoes with n cells.at n=13A359068
• Number of polyforms with n cells on the faces of a triakis icosahedron up to rotation and reflection.at n=18A383492