32186

Appears in sequences

• Convolution of A000203 with itself.at n=41A000385
• a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n+1-k), where k = [ (n+1)/2 ], s = (Lucas numbers), t = (1, p(1), p(2), ...).at n=22A024470
• Numbers k such that 7^k + 4 is prime.at n=22A096305
• Structured pentagonal hexacontahedral numbers (vertex structure 16).at n=10A100169
• Numbers m such that phi(m) = d_1^1 + d_2^2 + ... + d_k^k where d_1 d_2 ... d_k is the decimal expansion of m.at n=4A112721
• Number of base 18 n-digit numbers with adjacent digits differing by three or less.at n=5A126486
• Square table, read by antidiagonals, where row e.g.f.s, R(n,x), satisfy: d/dx log( R(n,x) ) = R(n+1,x)^(n+1) with R(n,0) = 1; that is, the logarithmic derivative of the e.g.f. of row n equals the e.g.f. of row n+1 to the n+1 power, for n>=0.at n=50A145085
• Row 4 of square table A145085.at n=5A145089
• a(n) = n*((4*n + 1)*(7*n - 4) + 15*n*(-1)^n)/48.at n=37A302766