login

Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).

A047108
T(n,n+3), array T as in A047100.
0
1, 4, 15, 57, 215, 812, 3083, 11750, 44934, 172401, 663370, 2559008, 9894006, 38331115, 148770379, 578346672, 2251636041, 8777816518, 34261079538, 133873978089, 523638632149, 2050085911219, 8033148700174, 31502487793694
OFFSET
0,2
CROSSREFS
Sequence in context: A244824 A316592 A077823 * A125145 A242781 A346195
KEYWORD
nonn
STATUS
approved