28196
domain: N
Appears in sequences
- a(n) is the concatenation of n and 7n.at n=27A009441
- a(n) = 36*n^2 - n.at n=27A157286
- a(n) = 144*n^2 - 2*n.at n=13A158135
- a(n) = 784*n^2 - 28.at n=5A158657
- Number of (w,x,y,z) with all terms in {0,...,n} and (least gapsize)=2.at n=19A212895
- The sum of denominators of unreduced mediants in Farey sequences of orders 1,2,..,n.at n=25A248832
- Expansion of Product_{k>=1} (1 + 4*x^k).at n=22A261568
- Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 245", based on the 5-celled von Neumann neighborhood.at n=33A271006
- Number of subsets of the first n nonzero triangular numbers whose sum is a nonzero triangular number.at n=19A377123
- Consecutive states of the linear congruential pseudo-random number generator (10924*s+11830) mod (2^15+1) when started at s=1.at n=7A384150