18188

Appears in sequences

• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = A001950 (upper Wythoff sequence).at n=21A024475
• s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = A001950 (upper Wythoff sequence).at n=20A025095
• Number of partitions satisfying cn(1,5) < cn(0,5) + cn(2,5) + cn(3,5) and cn(4,5) < cn(0,5) + cn(2,5) + cn(3,5).at n=39A039872
• Starting from generation 7 add previous and next term yielding generation 8.at n=33A048454
• Diagonal sums of a sum-of-powers triangle.at n=14A104880
• Numbers k such that 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)-1 and 6*p(k)*p(k+1)*p(k+2)*p(k+3)*p(k+4)*p(k+5)+1 are twin primes with p(h) = h-th prime.at n=24A129311
• Numbers k such that k and k^2 use only the digits 0, 1, 3, 4 and 8.at n=15A136840
• Partial sums of A023200.at n=41A172112
• Numbers consisting of ones and eights.at n=41A213084
• Number of binary strings of length n that can be written as the concatenation of nontrivial powers of other strings.at n=15A265642
• Expansion of 1/(1 - x/(1 - x^8/(1 - x^27/(1 - x^64/(1 - x^125/(1 - x^216/(1 - ... - x^(n^3)/(1 - ...)))))))), a continued fraction.at n=52A291146
• Number of minimal total dominating sets in the n-triangular honeycomb bishop graph.at n=6A304558
• Number of edges in an equal-armed cross with arms of length n (see Comments in A331456 for definition).at n=5A333036