30045

Appears in sequences

• First differences of A129983.at n=14A129984
• a(0)=a(1)=1. For n >= 2, if a(n-1) is coprime to n, then a(n) = a(n-1) + a(n-2). Otherwise, a(n)=1.at n=55A139047
• Irregular triangular array T(n,k) of consecutive composites.at n=42A226085
• Number of (n+1) X (1+1) 0..2 arrays with the maximum of every 2 X 2 subblock equal.at n=3A237028
• Number of (n+1)X(4+1) 0..2 arrays with the maximum of every 2X2 subblock equal.at n=0A237031
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum of every 2X2 subblock equal.at n=6A237035
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum of every 2X2 subblock equal.at n=9A237035
• Number of equilateral triangles bounded by the sides and diagonals of a regular 3n-gon.at n=14A238822
• Number of permutations p of [n] whose absolute displacements |p(i)-i| are Fibonacci numbers.at n=9A324373
• Numbers k such that A276086(k) is a sum of distinct primorial numbers.at n=13A328836
• Expansion of e.g.f. -log( 1 - (exp(x) - 1)^3 / 3! ).at n=6A346390
• Locations of records in A365196.at n=9A365239
• Intersection of A392605 and A392611.at n=36A392606