20529

Appears in sequences

• Number of (n+2) X 3 0..2 arrays with every 2 X 2 subblock sum equal to some diagonal or antidiagonal neighbor 2 X 2 subblock sum.at n=2A187280
• Number of (n+2)X5 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum.at n=0A187282
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum.at n=3A187283
• T(n,k)=Number of (n+2)X(k+2) 0..2 arrays with every 2X2 subblock sum equal to some diagonal or antidiagonal neighbor 2X2 subblock sum.at n=5A187283
• Number of n X 2 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, and rows and columns lexicographically nondecreasing.at n=25A229439
• Number of partitions p of n such that (maximal multiplicity of the parts of p) < (maximal part of p).at n=38A240310
• Numbers of the form HMMSS with primes H < 24 and MM, SS < 60, for which the number of seconds after midnight, 3600*H+60*MM+SS, is also prime.at n=11A295011
• Sum over all partitions of n of the product of the number of parts and the number of distinct parts.at n=21A339011
• Number of semi-sums of strict integer partitions of n.at n=45A366741