31349

Appears in sequences

• Number of connected graphs with one cycle of length 4.at n=11A000368
• Number of axially symmetric polyominoes with n cells.at n=18A006746
• a(n) = (A085249(n) - 1)/6.at n=33A088349
• Number of compositions of n into 5 parts such that no two adjacent parts are equal.at n=27A106354
• MM-numbers of labeled graphs with loops spanning an initial interval of positive integers.at n=36A320461
• Number of integer partitions of n into an odd number of parts, the greatest of which is odd.at n=46A340385
• Number of polyominoes with n cells and exactly one line of reflection symmetry, where that one line is parallel to the grid and passes through the center of at least one square.at n=18A349328