38229

Appears in sequences

• a(n) = 2*a(n-1) - (-1)^n for n > 0, a(0)=2.at n=14A062092
• Numbers k such that A081252(m)/m^2 has a local minimum for m = k.at n=14A081253
• Expansion of (1+x-x^2)/((1-x)*(1-4*x^2)).at n=15A097163
• An inverse Catalan transform of J(2n).at n=13A100335
• A007318^(-1) * A133648.at n=14A133649
• a(n) = a(n-1) + 4a(n-2) - 4a(n-3).at n=15A136326
• Array T(n,k) of odd Collatz preimages read by antidiagonals.at n=42A178415
• Dispersion of A016813 (4k+1, k>1), by antidiagonals.at n=37A191667
• Lexicographically earliest sequence such that the sequence and its first and second differences share no terms, and the 3rd differences are equal to the original sequence.at n=14A202349
• a(n) = (7*4^n - 1)/3.at n=7A206374
• Expansion of (1+2*x+3*x^2-x^3)/((1-x)*(1+x)*(1-2*x)*(1+2*x)).at n=15A221049
• Rectangular array with all start numbers Me(n, k), k >= 1, for the Collatz operation ud^(2*n), n >= 1, ending in an odd number, read by antidiagonals.at n=34A238475
• Total number of ON cells in the "Ulam-Warburton" two-dimensional cellular automaton of A147562 after A048645(n) generations.at n=35A255264
• a(0) = 2, a(1) = 2; for n > 1, a(n) = a(n-1) + 2*a(n-2) + 3.at n=14A290604
• An array A of the positive odd numbers, read by antidiagonals upwards, giving the present triangle T.at n=51A347834