43392
domain: N
Appears in sequences
- Number of nonequivalent dissections of an n-gon by nonintersecting diagonals up to rotation.at n=9A003455
- Expansion of ( Sum_{k>=0} k*q^(k^2) )^8.at n=37A037217
- a(0)=1; a(n) = sigma_1(n) + sigma_3(n).at n=35A092345
- Indices of primes in sequence defined by A(0) = 61, A(n) = 10*A(n-1) + 81 for n > 0.at n=29A101541
- Triangle read by rows: T(n,k) = number of Schroeder (or royal) n-paths (A006318) containing k returns to the diagonal y=x. (A northeast step lying on y=x contributes a return.)at n=38A108891
- T(n,k) is the number of order-decreasing and order-preserving partial transformations (of an n-chain) of waist k (waist(alpha) = max(Im(alpha))).at n=52A145035
- Triangle T(n,k), read by rows, given by [0,1,2,1,2,1,2,1,2,1,2,...] DELTA [2,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.at n=48A172040
- Number of (n+5)X12 0..1 matrices with each 6X6 subblock idempotent.at n=13A224576
- Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 150", based on the 5-celled von Neumann neighborhood.at n=30A286088
- Decimal representation of the diagonal from the corner to the origin of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 150", based on the 5-celled von Neumann neighborhood.at n=31A286088
- Even numbers m whose decimal expansion contains the decimal expansion of the greatest odd divisor of m as a substring.at n=35A291460
- Wiener index of the n-Keller graph.at n=3A292056
- a(n) = 2*a(n-1) - a(n-3) + a(floor(n/2)), where a(0) = 1, a(1) = 2, a(2) = 3.at n=18A298403
- Sum of sums of omegas of parts over all integer partitions of n.at n=30A325536