699048

Appears in sequences

• a(n) = abs(A154879(n+1)).at n=20A115341
• a(n) = 3a(n-1) - 3a(n-2) + 2a(n-3), a(0) = 3, a(1) = 2, a(2) = 0.at n=21A131370
• a(n) = (2^n + 2*(-1)^n - 6)/3.at n=21A153772
• Third differences of the Jacobsthal sequence A001045.at n=21A154879
• Decimal representation of the n-th iteration of the "Rule 133" elementary cellular automaton starting with a single ON (black) cell.at n=11A267457
• Triangle read by rows, coefficients of the polynomials P(m, n) = Sum_{k=1..n} binomial(m*n, m*k)* P(m, n-k)*z with P(m, 0) = 1 and m = 3.at n=30A278073
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 809", based on the 5-celled von Neumann neighborhood.at n=25A284177