34201

Appears in sequences

• a(n) = a(n-1) + a(n-2) + 1, with a(0) = 1 and a(1) = 11.at n=18A022325
• Least k such that Sum_{i=1..k} (prime(i) + prime(i+2) - 2*prime(i+1)) = 2n + 1.at n=36A073051
• Indices n of primes p(n), p(n+4) such that p(n)+1 and p(n+4)+1 have the same largest prime factor.at n=14A105408
• Number of permutations of length n which avoid the patterns 1234, 2143, 3421.at n=32A116842
• a(n) = 38*n^2 + 1.at n=30A158593
• Number of emergent parts in all partitions of n.at n=39A182699
• Centered 12-gonal numbers which are semiprimes, intersection of A003154 and A001358.at n=33A218172
• Let an integer with k+1 digits as n = d(k)*10^k + d(k-1)*10^(k-1) + ... + d(0)*10^0 and consider the transform T(n) = k*10^d(k) + (k-1)*10^d(k-1) + ... + 0*10^d(0). a(n) gives the fixed points of the transform T(n).at n=27A226767
• Number of length 5 1..(n+2) arrays with no leading partial sum equal to a prime and no consecutive values equal.at n=10A255720
• Number of nX6 0..1 arrays with every element unequal to 0, 1 or 5 king-move adjacent elements, with upper left element zero.at n=11A303717
• Numbers b > 1 such that the smallest four primes, i.e., 2, 3, 5 and 7 are base-b Wieferich primes.at n=37A339533
• Numbers k such that the k-th maximal run of composite numbers has length different from all prior maximal runs. Sorted positions of first appearances in A176246 (or A046933 shifted).at n=43A373400