-233

Appears in sequences

• Coefficients of modular function denoted G_6(tau) by Atkin.at n=4A005764
• a(n) = ceiling(Sum_{k=0..n} tan(k)).at n=32A051510
• a(n) = ceiling(Sum_{k=0..n} tan(k)).at n=30A051510
• Determinant of n X n Hankel matrix whose entries are t(i+j), 0 <= i, j < n, where t is the Thue-Morse sequence.at n=14A056887
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 3.at n=54A060022
• Let u(1)=u(2)=u(3)=1, u(n)=sign(u(n-1)-u(n-2))/(u(n-3)+1); then a(n) is the numerator of u(n).at n=77A076898
• Let u(1)=u(2)=u(3)=1, u(n)=sign(u(n-1)-u(n-2))/(u(n-3)+1); then a(n) is the numerator of u(n).at n=76A076898
• A transform of the Fibonacci numbers.at n=14A103311
• G.f. A(x) satisfies: A(x)^2 = A(x^2) + 4*x.at n=8A107087
• G.f. A(x) satisfies: A(x) = A(x^2)^(1/2) + 4*x.at n=16A107088
• McKay-Thompson series of class 27e for the Monster group.at n=52A112168
• a(n) = A000045[n]*(A004001[n + 1] - 2*A004001[n] + A004001[n - 1]).at n=12A120473
• Expansion of (1 + x + x^2)/(1 - x^3 + x^4).at n=46A124750
• Triangle read by rows: matrix inverse of A110877.at n=28A126126
• a(n) = -n^2 + 9*n + 53.at n=22A126665
• Table T(d,n) read column by column: the n-th term in the sequence of the d-th differences of A138112, d=0..4.at n=72A138110
• Table T(d,n) read column by column: the n-th term in the sequence of the d-th differences of A138112, d=0..4.at n=68A138110
• Expansion of x/( 1+x-x^2-x^4-x^5-x^6-x^7+x^9+x^10 ).at n=11A142155
• First differences of A142705.at n=17A142888
• a(n) = a(n-1)+a(n-2), n>1 ; a(0)=1, a(1)=-1.at n=15A152163