40689

Appears in sequences

• G.f. is the polynomial (1-x^3) * (1-x^6) * (1-x^9) * (1-x^12) * (1-x^15) * (1-x^18) * (1-x^21) * (1-x^24) * (1-x^27) * (1-x^30) * (1-x^33) / (1-x)^11.at n=8A162628
• Let CK(m) denote the complete elliptic integral of the first kind. a(n) is the n-th smallest integer k such that floor(CK(1/k)) = floor(CK(1/(k-1))) + 1.at n=11A172259
• Coefficients in the expansion of Product_{m>=1} (1 - q^(13*m))/(1 - q^m).at n=41A341714
• Number T(n,k) of partitions of [n] having k blocks containing their own index when blocks are ordered with decreasing largest elements; triangle T(n,k), n>=0, 0<=k<=ceiling(n/2), read by rows.at n=35A350647
• Number of partitions of [n] avoiding blocks containing their own index when blocks are ordered with decreasing largest elements.at n=10A350649
• Numbers whose digits are distinct nonprimes and are not a permutation of a smaller such number.at n=61A359982