40419

Appears in sequences

• Number of planar partitions of n with exactly 4 rows.at n=18A091358
• Smallest sequence which lists the position of digits "3" in the sequence.at n=44A167453
• Array: row n shows the coefficients of the characteristic polynomial of the n-th principal submatrix of (3i-2 if i=j and = 0 otherwise), as in A204160.at n=22A204161