61732

Appears in sequences

• C(2n-1,n-1) mod n^4.at n=18A099908
• The number of compositions of n which cannot be viewed as stacks.at n=17A115981
• Number of -n..n arrays x(0..3) of 4 elements with zero sum and no two or three adjacent elements summing to zero.at n=22A200431
• Number T(n,k) of equivalence classes of ways of placing k 2 X 2 tiles in an n X 9 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=2, 0<=k<=4*floor(n/2), read by rows.at n=52A238581
• Binomial(2p-1,p-1) modulo p^4, with p=prime(n).at n=7A242473
• Numbers whose palindromization is a perfect power.at n=30A342942
• G.f. satisfies A(x) = ( 1 + x * (1 + x*A(x)^2)^2 )^2.at n=8A371609