24166

Appears in sequences

• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (Lucas numbers), t = (primes).at n=21A025098
• Expansion of 1/(1 - x - x^3 - x^5 - x^7).at n=23A117760
• The 60-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=45A244802
• Number of compositions of n with weakly increasing differences.at n=34A325546