31795

Appears in sequences

• Number of partitions in parts not of the form 13k, 13k+3 or 13k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 5 are greater than 1.at n=46A035951
• Base-3 digits are, in order, the first n terms of the periodic sequence with initial period 1,1,2.at n=9A037528
• Numbers k such that 2^(2*k-7)-7 is prime.at n=7A138578
• Partial sums of A000132.at n=32A175360
• Number of length 4 0..n arrays with each partial sum starting from the beginning no more than sqrt(2) standard deviations from its mean.at n=13A244907
• Number of set partitions of [2n] with symmetric block size list of length four.at n=4A275293
• Number of compositions (ordered partitions) of n into hexagonal numbers (A000384).at n=43A322798
• Triangle read by rows: T(n,k) = Sum_{i=k..n} C(i-1,i-k)*C(i,k).at n=61A382225