20986

Appears in sequences

• a(n) = floor(n*2*(3^n-2^n)/2^n).at n=15A139754
• Triangle read by rows: row n gives coefficients of expansion of q-reduced tangent number d_{n}(q) in powers of q.at n=30A143195
• Triangle read by rows: row n gives coefficients of expansion of q-reduced tangent number d_{n}(q) in powers of q.at n=37A143195
• Number of partitions of n having standard deviation σ <= 2.at n=48A238659
• Number of partitions p of n such that the multiplicity of the median of p is a part of p.at n=43A240492