18472

Appears in sequences

• Numbers whose base-4 representation contains exactly four 0's and three 2's.at n=27A045060
• Number of 8k+5 primes (A007521) in range ]2^n,2^(n+1)].at n=19A095011
• Sequence defined by the recurrence formula a(n+1)=sum(a(p)*a(n-p)+k,p=0..n)+l for n>=1, with here a(0)=1, a(1)=0, k=-2 and l=0.at n=10A177110
• a(n) = (9*n^3 + 5*n)/2.at n=15A230018
• Number of 4Xn 0..1 arrays with no element equal to more than two of its horizontal, diagonal or antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=8A281403
• 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 214", based on the 5-celled von Neumann neighborhood.at n=28A286736
• Number of nX2 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.at n=9A304341
• Number of integer partitions of n with no 1's such that no part is a power of any other (unequal) part.at n=53A323053
• G.f. satisfies A(x) = 1 + x*A(x)*(1 + x^5*A(x)^2).at n=21A365732