18703

Appears in sequences

• Numbers k such that tau(k) = tau(k+1) mod 691, where tau is Ramanujan's tau function A000594.at n=29A121733
• a(n) = Sum_{k = 0..n } binomial(n + 1, k + 1)*binomial(n, k)*k!.at n=6A129833
• Values of n such that L(20) and N(20) are both prime, where L(k) = (n^2+n+1)*2^(2*k) + (2*n+1)*2^k + 1, N(k) = (n^2+n+1)*2^k + n.at n=47A227523
• Sequence of integers defined by 3-expansion of Pi-3.at n=12A282730
• The number of partitions of n which represent Chomp positions with Sprague-Grundy value 7.at n=57A284780
• a(n) = [x^n] 1/(1-x)^n * Product_{k=1..n} 1/(1-x^k).at n=8A292613
• Number of partitions of n with nine kinds of 1.at n=8A320755
• Number of partitions of n with rank a multiple of 4.at n=43A363233
• Smallest number that is the sum of n > 2 consecutive primes and also the sum of n consecutive composites.at n=26A391771