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A049431
Duplicate of A049428
0
1, 1, 6, 36, 246, 2046, 19716, 209616, 2441916, 31050396, 425883816, 6244077456
OFFSET
0,3
CROSSREFS
Sequence in context: A181964 A354457 A199422 * A049428 A129063 A367260
KEYWORD
dead
STATUS
approved