-154

Appears in sequences

• Coefficients of the 3rd-order mock theta function f(q).at n=34A000025
• Coefficient of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=17A000039
• Expansion of 1 / Sum_{n=-oo..oo} x^(n^2).at n=9A004402
• a(n) = (2^n/n!)*Product_{k=0..n-1} (4*k - 1).at n=4A004984
• Percolation series for directed square lattice.at n=7A006835
• Expansion of e.g.f.: exp(log(1+x)*cosh(x)).at n=7A009193
• 10th differences of primes.at n=9A036271
• Generalized Stirling number triangle of first kind.at n=11A049444
• Coefficients of the '10th-order' mock theta function X(q).at n=73A053283
• Sum_{d=1..n} phi(d)*mu(d).at n=47A054585
• Sum_{d=1..n} phi(d)*mu(d).at n=50A054585
• Sum_{d=1..n} phi(d)*mu(d).at n=49A054585
• Sum_{d=1..n} phi(d)*mu(d).at n=48A054585
• McKay-Thompson series of class 44a for Monster.at n=21A058680
• McKay-Thompson series of class 84a for Monster.at n=47A058761
• a(n) = + 1 - 2 - 3 + 4 + 5 + 6 - 7 - 8 - 9 - 10 + 11 + 12 + 13 + 14 + 15 - ... + (+-1)*n, where there is one plus, two minuses, three pluses, etc. (see A002024).at n=35A064520
• Alternating sum of primes: a(1) = A000040(1) = 2 and a(n) = a(n-1) + A000040(n)*(-1)^n for n > 1.at n=60A066033
• Consider the power series (x + 1)^(1/3) = 1 + x/3-x^2/9 + 5x^3/81 + ...; sequence gives numerators of coefficients.at n=6A067622
• Determinant of the n X n matrix whose element (i,j) equals |i-j| (Mod 3).at n=52A071768
• a(n) = A000217(n) - A048702(n).at n=33A075113