36260

Appears in sequences

• Irregular triangle read by rows: Whitney numbers of the second kind a(n,k), n >= 1, k >= 0, for the star poset.at n=58A007799
• Numbers n which when converted to base 6, reversed and converted back to base 10 yield a number m such that n mod m = 0. Cases which are trivial or result in digit loss are excluded.at n=4A091080
• Number of ways to place 3 nonattacking nightriders on a 3 X n board.at n=21A172218
• Number of (n+1)X(2+1) 0..2 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=2A236776
• Number of (n+1)X(3+1) 0..2 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=1A236777
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=7A236780
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.at n=8A236780
• a(1) = a(2) = 2; a(n) = a(n-1) + gpf(a(n-2)), where gpf is greatest prime factor.at n=45A258125
• Expansion of Sum_{i>=1} x^(i^2) / (1 - Sum_{j>=1} x^(j^2))^2.at n=24A281704
• Number of 6-cycles in the n-triangular graph.at n=5A290940
• Number of polyforms with n cells on the faces of a deltoidal icositetrahedron up to rotation.at n=13A383805