-68

Appears in sequences

• Coefficients of the 3rd-order mock theta function f(q).at n=26A000025
• Let A(n) = #{(i,j): i^2 + j^2 <= n}, V(n) = Pi*n, P(n) = A(n) - V(n); A000099 gives values of n where |P(n)| sets a new record; sequence gives closest integer to P(A000099(n)).at n=44A000036
• Coefficient of q^(2n) in the series expansion of Ramanujan's mock theta function f(q).at n=13A000039
• From fundamental unit of Z[ (-n)^{1/4} ].at n=37A006831
• E.g.f.: Expansion of sin(tan(x)*exp(x)).at n=5A009512
• Expansion of e.g.f.: sin(tanh(x)*exp(x)).at n=5A009528
• Expansion of the e.g.f. sin(x)*(1+x).at n=68A009531
• sin(exp(x)-cos(x))=x+2/2!*x^2-12/4!*x^4-68/5!*x^5-208/6!*x^6...at n=4A013310
• Zeroth row of infinite Latin square heading to +oo.at n=49A019570
• Discriminants of quadratic number fields Q(sqrt -n) for n squarefree.at n=11A033197
• 6th differences of primes.at n=41A036267
• 9th differences of primes.at n=33A036270
• Solutions t to the equation s*prime(n) + t*prime(n+1) = 1 with |s| as small as possible.at n=32A045893
• Dirichlet inverse of sigma function (A000203).at n=66A046692
• Generalized Stirling number triangle of first kind.at n=43A049460
• First differences of chowla(n).at n=47A053246
• Coefficients of the '3rd-order' mock theta function nu(q).at n=29A053254
• Numbers n where 36n^2+24n+7 is prime (sorted by absolute values with negatives before positives).at n=48A056902
• Numbers k such that 36*k^2 + 12*k + 5 is prime (sorted by absolute values with negatives before positives).at n=41A056907
• a(n+3)=a(n)+a(n+1)-a(n+2), starting with 1,2,3.at n=71A057174