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A281347
Row sums of A281348.
1
1, 3, 8, 27, 90, 330, 1225, 4729, 18554, 74234, 300828, 1233992, 5110067, 21341337, 89768701, 379995230, 1617476520, 6918987187, 29727655820, 128233521698, 555136090343, 2411084930425, 10503086930643, 45878043207696, 200900611229570, 881783809570251
OFFSET
1,2
CROSSREFS
Cf. A281348.
Sequence in context: A148840 A374570 A047153 * A000238 A259811 A148841
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jan 20 2017
STATUS
approved