21246

Appears in sequences

• Expansion of (eta(q^3)eta(q^15)/(eta(q)eta(q^5)))^2 in powers of q.at n=23A093065
• a(n) = (n+1)(n+2)(n+3)(35n^3 + 153n^2 + 232n + 120)/720.at n=7A107971
• Values of n such that n^a-+a are primes, a=7.at n=11A155022
• Number of n-length words w over a 4-ary alphabet such that w is empty or a prefix z concatenated with letter a_i and i=1 or 0 < #(z,a_{i-1}) >= #(z,a_i), where #(z,a_i) counts the occurrences of the i-th letter in z.at n=10A240610
• Number of (5+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=33A250659
• Numbers m such that A166133(m+1) = A166133(m)^2 - 1.at n=31A256703
• Numbers n such that A002088(n) < 3n^2/Pi^2.at n=39A285022
• Numbers of graphs which are double triangle descendants of K_5 with four more vertices than triangles.at n=34A332735
• Nonprime numbers k whose arithmetic derivative k' (A003415) is a Fibonacci number (A000045).at n=37A362141
• Consecutive states of the linear congruential pseudo-random number generator (625*s + 6571) mod 31104 when started at s=1.at n=23A385279