21850

Appears in sequences

• Numbers whose base-2 representation has exactly 14 runs.at n=9A043581
• Fifth column of the (1,4)-Pascal triangle A095666.at n=22A095667
• a(0)=a(1)=1. a(n) = the multiple of n which is > a(n-1)+a(n-2) and is <= a(n-1)+a(n-2)+n.at n=19A128034
• a(n) = n*(n + 1)*(19*n - 16)/6.at n=19A237618
• a(n) = n*(n + 1)*(n^2 - n + 3)/6.at n=19A257055
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 318", based on the 5-celled von Neumann neighborhood.at n=37A271252
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + b(n-2)*b(n), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A296266
• Sequences n*(n+1)*(6*n+1)/2 and n*(n+1)*(7*n+1)/2 interleaved.at n=37A296636
• Tribonacci representation of 2^n, written in base 10.at n=13A305380
• Number of ways to write n as an ordered sum of ten powers of 2.at n=16A342254