42440

Appears in sequences

• Sum of 10 positive 9th powers.at n=27A003399
• Powers of sqrt(21) rounded up.at n=7A017969
• Powers of fourth root of 21 rounded up.at n=14A018107
• n written in fractional base 6/4.at n=42A024637
• Riordan array (1/(1-3x*c(x)),xc(x)), c(x) the g.f. of A000108.at n=47A117375
• a(n) = 31*n^2 + 1.at n=37A247155
• Number of iterations to reach a final state for an n X n lattice of sandpiles on a torus according to rules specified in the comment section.at n=14A249872
• Expansion of Product_{k>=1} (1 + x^(k^2))^2/(1 - x^(k^2))^2.at n=36A279227