A334692 Column k=2 of A334691.

1, 20, 204, 616, 2428, 3968, 11164

Offset

1,2

Links

Table of n, a(n) for n=1..7.

Crossrefs

Cf. A334691, A334693.

Sequence in context: A121088 A302838 A302921 * A325474 A364651 A133070

Adjacent sequences: A334689 A334690 A334691 * A334693 A334694 A334695

Keyword

nonn,more

Author

Scott R. Shannon and N. J. A. Sloane, May 18 2020

Status

approved