81922

Appears in sequences

• Number of partitions of 2n prime to 3,5 with all odd parts occurring with even multiplicities. There is no restriction on the even parts.at n=45A103259
• A monotonic doubly-fractal sequence. Erase the last (rightmost) digit of every integer: what is left is the sequence itself. The erased digits, one by one, form also the sequence itself.at n=43A127204
• Numbers n such that m + (sum of digits in base-4 representation of m) = n has exactly three solutions.at n=14A230635
• Numbers k such that the total number of consecutive runs of zeros of length m in every binary expansion from 1 to k, is even, for all m != floor(log_2(k)).at n=44A360320
• a(n) = Sum_{k=0..n} 3^(n-k)*C(2*n,n-k).at n=5A386826