-73

Appears in sequences

• Coefficients of Airey's converging factor.at n=7A001662
• Power series expansion of the Rogers-Ramanujan continued fraction 1+x/(1+x^2/(1+x^3/(1+x^4/(1+...)))).at n=67A003823
• sech(tan(sinh(x)))=1-1/2!*x^2-7/4!*x^4-73/6!*x^6-239/8!*x^8...at n=3A012158
• a(n) = 2^n-n^4.at n=3A024014
• Expansion of square root of q times normalized Hauptmodul for Gamma(4) in powers of q^8.at n=71A029838
• Expansion of Product_{m>=1} ((1+q^(2*m-1))/(1+q^(2*m)))^3.at n=18A029840
• Site percolation series for hexagonal net.at n=4A030131
• Column 1 of Inverse partition triangle A038498.at n=48A039800
• Smallest (in magnitude) nonzero number m such that n!+m is prime.at n=38A053714
• Smallest (in magnitude) nonzero number m such that n!+m is prime.at n=23A053714
• Expansion of square of continued fraction 1/ ( 1+q/ ( 1+q^2/ ( 1+q^3/ ( 1+q^4/... )))).at n=34A055101
• a(n) = n^2 - primefloor(n)*primeceiling(n).at n=36A056139
• a(n) = n^2 - previousprime(n)*nextprime(n), for n>2.at n=35A056140
• Triangle of numbers (when unsigned) related to congruum problem: T(n,k)=k^2+2nk-n^2 with n>k>0 and starting at T(2,1)=1.at n=46A057105
• McKay-Thompson series of class 24D for the Monster group.at n=38A058574
• McKay-Thompson series of class 84a for Monster.at n=39A058761
• Multiplicative with a(p^e) = -p.at n=72A062953
• a(n) = prime(n)-n*tau(n) where tau(n) is the number of divisors of n.at n=51A067292
• a(n) = prime(n)-n*tau(n) where tau(n) is the number of divisors of n.at n=44A067292
• Determinant of the n X n matrix whose element (i,j) equals |i-j| (Mod 3).at n=25A071768