36691771392
domain: N
Appears in sequences
- Three people (P1, P2, P3) are in a circle and are saying Hello to each other. They start with P2 saying "Hello, Hello". Thereafter Pn says "Hello" for n times the total number of Hello's so far.at n=23A076507
- Expansion of 2*x*(1+4*x+8*x^2)/(1-24*x^3).at n=22A076508
- Number of nX2 arrays of permutations of 0..n*2-1 with rows nondecreasing modulo 2 and columns nondecreasing modulo 6.at n=11A264702
- a(n) is denominator of y(n), where y(n+1) = (25*n^2-1)/48 * y(n) + (1/2)*Sum_{k=1..n}y(k)*y(n+1-k), with y(0) = -1.at n=7A269419
- a(n) = phi(n^8) = n^7*phi(n).at n=23A306412