19935

Appears in sequences

• Triangle read by rows: T(n,k) is the number of labeled monoids of order n with k idempotents and a fixed identity.at n=16A058158
• Value of the n-th Eulerian polynomial (cf. A008292) evaluated at x=-2.at n=8A087674
• 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), (-1, 0, 1), (-1, 1, -1), (1, 0, 0), (1, 1, -1)}.at n=10A148230
• a(n) = A000043(n)-2.at n=23A153798
• Numerator of Euler(n, 8/31).at n=3A157689
• Sum 3^((k^2+3k)/2) from k=1 to n.at n=2A178186
• Number of (n+1) X 6 0..2 arrays with all 2 X 2 subblock sums the same.at n=5A183999
• Number of (n+1) X 7 0..2 arrays with all 2 X 2 subblock sums the same.at n=4A184000
• Polylogarithm li(-n,-1/2) multiplied by (3^(n+1))/2.at n=8A212846
• Number of (n+2)X(5+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=5A231224
• Number of (n+2)X(6+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=4A231225
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=49A231227
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.at n=50A231227
• a(n) = Sum_{i=0..n} digsum_3(i)^4, where digsum_3(i) = A053735(i).at n=61A231505
• Partial sums of A263614 starting at n=2.at n=39A263615
• Number of widely recursively normal integer partitions of n.at n=49A332295
• a(n) = (A084218(n) - 1)/12.at n=23A373040
• a(n) = Sum_{k=1..n-1} binomial(n, k)*2^(n-k-1)*(k-1).at n=8A379745