23838

Appears in sequences

• Number of Twopins positions.at n=22A005687
• Numbers k such that 189*2^k+1 is prime.at n=25A032471
• Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.at n=3A237688
• Number of (n+1)X(4+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.at n=0A237691
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.at n=6A237694
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.at n=9A237694
• Size of blocks of 1's in the second column of Catalan numbers written in binary and left-aligned.at n=22A279026
• Total sum of the left-to-right minima in all compositions of n into distinct parts.at n=22A336770
• Sum of the prime numbers appearing along the border of an n X n square array whose elements are the numbers from 1..n^2, listed in increasing order by rows.at n=44A344846