[The antidiagonal sums for A283681, A283682, A283683 should also be added to the OEIS if they are missing - and then this remark should be deleted!]
Table of n, a(n) for n=1..12.
Sequence in context: A229718 A246469 A092507 * A291583 A218874 A212205
Adjacent sequences: A297185 A297186 A297187 * A297189 A297190 A297191
N. J. A. Sloane, Dec 31 2017