-238

Appears in sequences

• Expansion of (1+sin(x)+sin(x)^2)/(1-sin(x)+sin(x)^2).at n=5A029589
• Glaisher's chi_4(n).at n=12A030212
• 8th differences of primes.at n=31A036269
• Image of primes (A000040) under "little Hankel" transform that sends [c_0, c_1, ...] to [d_0, d_1, ...] where d_n = c_n^2 - c_{n+1}*c_{n-1}.at n=30A056221
• McKay-Thompson series of class 10E for Monster.at n=66A058101
• Determinant of the n X n matrix whose element (i,j) equals the floor( Phi^(i-j) + 1).at n=29A071784
• a(1) = 1, a(2n) = a(2n-1) + c(n) and a(2n+1) = a(2n) - p(n), where c(n)=A002808(n) and p(n)=A000040(n) are the n-th composite and n-th prime numbers, respectively.at n=41A073891
• Expansion of 1 / ((1-x)*(1-x+x^2+x^3)).at n=18A077872
• First differences of roots of consecutive prime powers; a(1)=1.at n=67A088233
• Sequence is {a(4,n)}, where a(m,n) is defined at sequence A110665.at n=11A110669
• McKay-Thompson series of class 20C for the Monster group.at n=66A112159
• Matrix inverse of triangle A121335, where A121335(n,k) = C( n*(n+1)/2 + n-k + 1, n-k) for n>=k>=0.at n=16A121440
• Irregular triangle read by rows: row n is the expansion of (1 + 2*x - x^2)^n.at n=58A123199
• Irregular triangle read by rows: row n is the expansion of (1 + 2*x - x^2)^n.at n=54A123199
• Expansion of phi(x) * psi(x^4) * phi(-x^4)^4 in powers of x where phi(), psi() are Ramanujan theta functions.at n=68A128711
• Expansion of q^(-1/8)* eta(q)^5* eta(q^2)^3/ eta(q^4)^2 in powers of q.at n=17A128712
• Expansion of q^(-1/8)* eta(q)^5* eta(q^2)^3/ eta(q^4)^2 in powers of q.at n=57A128712
• Expansion of q^(-1/8)* eta(q)^5* eta(q^2)^3/ eta(q^4)^2 in powers of q.at n=35A128712
• Expansion of q^(-3/8)* eta(q)^7* eta(q^4)^2/ eta(q^2)^3 in powers of q.at n=51A128713
• McKay-Thompson series of class 10E for the Monster group with a(0) = 1.at n=66A132980