147622

Appears in sequences

• a(0) = 1; a(n) = (5*3^(n-1) - 1)/2 for n > 0.at n=11A060816
• Number of ways associated with A088959.at n=36A088111
• Expansion of (1+2x-x^3+x^4)/(1-4x^2+3x^4).at n=21A181655
• Expansion of (1+2*x+2*x^2-x^3)/((1-x)*(1+x)*(1-3x^2)).at n=21A220946
• Number of (n+2)X(5+2) 0..1 arrays with every 3X3 subblock diagonal sum plus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=15A253838
• a(n) = (5*9^n - 1)/2.at n=5A255043
• Array A read by upward antidiagonals: A(n,k) = ((2*n+1)*9^k-1)/2, n,k >= 0.at n=33A255044
• Row sums of A321624.at n=11A321573
• a(n) = n+1 for n <= 2; otherwise a(n) = 3*a(n-3)+1.at n=31A329774
• Numbers in whose base 3-representation every two consecutive digits and every three consecutive digits are distinct.at n=42A369635
• Least number m for which there exists some positive k < m where the sum of the integers from k + 1 to m inclusive is an n-th power > 1.at n=20A372782