-1021

Appears in sequences

• Numerators of coefficients in Taylor series expansion of log(cosec(x)*tanh(x)).at n=5A012860
• Expansion of 1/(1-2*x+x^2+2*x^3).at n=14A077942
• Expansion of 1/(1+2*x+x^2-2*x^3).at n=14A077989
• 5th differences of partition numbers A000041.at n=58A081095
• a(0)=1. a(n)= -2^(n-1)-3*(-1)^n, n>1.at n=11A156067
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 99", based on the 5-celled von Neumann neighborhood.at n=17A270159
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 237", based on the 5-celled von Neumann neighborhood.at n=17A270983
• Expansion of 1 + x*(1-x)/(1 + x^2*(1-x^2)/(1 + x^3*(1-x^3)/(1 + x^4*(1-x^4)/(1 + x^5*(1-x^5)/(1 + ...))))), a continued fraction.at n=34A291193
• Expansion of 1 - x*(1+x)/(1 + x^2*(1-x^2)/(1 - x^3*(1+x^3)/(1 + x^4*(1-x^4)/(1 - x^5*(1+x^5)/(1 - ...))))), a continued fraction.at n=34A291200
• Square array A(n, k) = A329644(prime(n)^k), read by falling antidiagonals: (1,1), (1,2), (2,1), (1,3), (2,2), (3,1), ...at n=64A329637
• The Worpitzky transform of the squares.at n=9A344920
• Deficiency of squares: a(n) = 2n^2 - sigma(n^2).at n=29A377879