27705

Appears in sequences

• a(n) = dot_product(1,2,...,n)*(5,6,...,n,1,2,3,4).at n=40A026043
• Irregular array where the n-th row are the divisors, not occurring earlier in the sequence, of the sum of the terms in all previous rows. a(1)=2.at n=50A120576
• Expansion of e.g.f. sech(x*exp(x)).at n=8A294313
• Numbers k such that 345*2^k+1 is prime.at n=49A319742
• a(n) = number of partitions p of n such that the greatest multiplicity of the parts of p is not a part of p.at n=41A365616
• Expansion of (1-3*x-sqrt(9*x^2-14*x+1))/4.at n=6A379103