231713

Appears in sequences

• Row sums of triangle A115127.at n=9A115128
• Composite numbers m such that m'' = m'-1, where m' and m'' are the first and the second arithmetic derivatives of m.at n=20A189803
• Number of (n+1)X(n+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=2A234115
• Number of (n+1) X (3+1) 0..2 arrays with every 2 X 2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=2A234117
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the absolute values of all six edge and diagonal differences no larger than 1.at n=12A234122