-3248

Appears in sequences

• Expansion of e.g.f.: log(1+tan(tanh(x))).at n=8A009367
• cos(arcsinh(x)*arcsin(x))=1-12/4!*x^4-3248/8!*x^8-19157952/12!*x^12...at n=2A012603
• sech(arctanh(x)*arctan(x))=1-12/4!*x^4-3248/8!*x^8-25240512/12!*x^12...at n=2A012737
• Square root of weight enumerator of binary (16,256,6) nonlinear Nordstrom-Robinson code.at n=8A109737
• McKay-Thompson series of class 18i for the Monster group.at n=49A112157
• Sequence arising from study of multiplicative complexity of symmetric functions over a field with characteristic p.at n=25A250109
• 1-gonal pyramidal numbers.at n=27A254749
• First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 173", based on the 5-celled von Neumann neighborhood.at n=35A270468
• Expansion of e.g.f. arcsinh(log(1 + x)).at n=8A296980
• a(1) = 1; a(n) = -Sum_{k=1..n} a(k/gcd(n,k)).at n=27A343762
• Determinant of the 3 X 3 Hankel matrix of consecutive primes starting at prime(n).at n=38A392522