-69

Appears in sequences

• Expansion of Product_{k >= 1} (1 - x^k)^6.at n=42A000729
• Expansion of log(1+x)*exp(sin(x)).at n=6A009417
• sech(arcsin(arcsin(x)))=1-1/2!*x^2-3/4!*x^4-69/6!*x^6-3335/8!*x^8...at n=3A012074
• Zeroth row of infinite Latin square heading to -oo.at n=29A019585
• Expansion of Product_{m>=1} (1+q^m)^(-3).at n=11A022598
• Solutions t to the equation s*prime(n) + t*prime(n+1) = 1 with |s| as small as possible.at n=58A045893
• Matrix 9th power of inverse partition triangle A038498.at n=36A050312
• Generalized Stirling number triangle of first kind.at n=26A051380
• Consider real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd; sequence gives values of k.at n=42A051998
• Coefficients of the '6th-order' mock theta function 2 mu(q).at n=14A053273
• a(n) = Sum_{d|2n+1} phi(d)*mu(d).at n=35A054586
• Coefficients of replicable function number 12c.at n=8A058491
• McKay-Thompson series of class 14a for Monster.at n=4A058505
• McKay-Thompson series of class 24a for Monster.at n=8A058584
• McKay-Thompson series of class 28C for Monster.at n=23A058608
• Distance of 2^n from its nearest prime neighbor and in case of a tie, choose the smaller.at n=49A059959
• Expansion of (1-x-x^N)/((1-x)(1-x^2)(1-x^3)...(1-x^N)) for N = 3.at n=30A060022
• a(n) = n*p(n+1)-(n+1)*p(n) = n*d(n)-p(n), where p(n) is the n-th prime and d(n) is the n-th prime-difference, A001223(n).at n=69A062357
• Coefficient array for certain numerator polynomials N7(n,x), n >= 0 (rising powers of x).at n=45A063266
• 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=20A064520