32418

Appears in sequences

• a(n) = number of (s(0), s(1), ..., s(n)) such that every s(i) is a nonnegative integer, s(0) = 0, s(1) = 1, |s(i) - s(i-1)| <= 1 for i >= 2. Also a(n) = sum of numbers in row n+1 of the array T defined in A026105. Also a(n) = T(n,n), where T is the array defined in A025564.at n=12A025566
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 20.at n=17A031698
• Revert transform of (1 - x - 4x^2 + x^3)/(1 - 4x^2 - 2x^3).at n=9A049137
• a(n) = concatenation of n^2 and n.at n=17A055436
• a(n) = 100*n^2 + n.at n=17A055438
• a(n) = 400*n^2 + 2*n.at n=8A158312
• a(n) = 324*n^2 + 18.at n=10A158590
• Numbers m such that m*reversal(m) contains every decimal digit exactly once.at n=19A178929
• Numbers n such that d(n-2) = d(n) = d(n+2) = 12 where d(n)=A000005(n).at n=25A190645
• G.f. for Ehrhart quasi-polynomials for hyperplane arrangements of type E_8.at n=57A210632
• Expansion of Sum_{i>=1} mu(i)^2*x^i/(1 - x^i) * Product_{j>=i} 1/(1 - mu(j)^2*x^j), where mu() is the Moebius function (A008683).at n=36A284829
• a(n) = index of 2*prime(n) in A381019.at n=41A379811