18356

Appears in sequences

• a(n) is the sum of squares of the numbers in row n of array T given by A026120.at n=6A027328
• a(0) = 0; for n>0, a(n) = maximal number of regions into which space can be divided by n spheres.at n=39A046127
• Total number of possible standard knight moves on an n X 2n chessboard, if the knight is placed anywhere.at n=34A180319
• Number of partitions p of n such that (number of numbers of the form 5k + 2 in p) is a part of p.at n=38A241551
• Number of (n+2)X(3+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.at n=5A260010
• Number of (n+2)X(6+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.at n=2A260013
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.at n=30A260015
• T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000101 00010101 or 01010101.at n=33A260015
• a(n) = number of steps required to reach 0 from F(n+2)-1 by repeatedly subtracting from a natural number the number of ones in its Zeckendorf representation. Here F(n) = the n-th Fibonacci number, F(0) = 0, F(1) = 1, F(2) = 1, F(3) = 2, ...at n=24A261081
• Numbers n such that Bernoulli number B_{n} has denominator 1590.at n=28A272140
• Number of orbits of the direct square of the alternating group A_n^2 where A_n acts by conjugation, such that both permutations in a representative pair are of the same conjugacy class in A_n.at n=9A327151
• a(n) = Sum_{k=0..floor(n/3)} |Stirling1(n - 2*k,n - 3*k)|.at n=16A357931