75848

Appears in sequences

• Number of base 28 n-digit numbers with adjacent digits differing by two or less.at n=6A126415
• Number of set partitions C_t(n) of {1,2,...,t} into at most n parts, with an even number of elements in each part distinguished by marks; triangle C_t(n), t>=0, 0<=n<=t, read by rows.at n=42A261275
• Numbers n such that the average of the positive divisors of n^2 is a square.at n=4A272442