21752

Appears in sequences

• Total number of possible standard knight moves on an n X 2n chessboard, if the knight is placed anywhere.at n=37A180319
• Number of compositions of n that avoid the pattern 23-1.at n=16A189076
• Triangle T(n,m) = coefficient of x^n in the Taylor expansion of [(1-(1-8*x)^(1/4))/(1+(1-8*x)^(1/4))]^m.at n=22A202550
• Number of formula representations of n using addition, multiplication and the constant 1.at n=10A214833
• Number of nX3 0..3 arrays with no element equal to one plus the sum of elements to its left or zero plus the sum of elements above it or one plus the sum of the elements diagonally to its northwest or zero plus the sum of the elements antidiagonally to its northeast, modulo 4.at n=8A241250
• a(n) = (n^(n+1)-(n-1)^n) + ((n+1)^n-n^(n-1)).at n=4A258389
• Number of n X n 0..2 arrays with no element equal to more than one of its king-move neighbors and with new values introduced in order 0 sequentially upwards.at n=9A280852
• Irregular table read by rows: The number of acyclic digraphs on n labeled nodes with k descents.at n=35A307049
• Indices at which record high values occur in A326344.at n=31A326298
• Numbers k such that k and k+1 are both binary Moran numbers (A334344).at n=17A334345
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals downwards, where column k is the expansion of B(x)^k, where B(x) is the g.f. of A381572.at n=50A381571
• Expansion of B(x)/sqrt(1 + 4*(B(x)-1)/5), where B(x) is the g.f. of A001449.at n=5A387084