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A026666
T(n,0) + T(n,1) + ... + T(n,n), T given by A026659.
0
1, 2, 4, 10, 20, 42, 84, 196, 392, 842, 1684, 3878, 7756, 16786, 33572, 76846, 153692, 333998, 667996, 1523448, 3046896, 6639150, 13278300, 30206468, 60412936, 131892226, 263784452, 598952096, 1197904192, 2619074230
OFFSET
0,2
CROSSREFS
Sequence in context: A167030 A026644 A167193 * A325508 A238439 A121880
KEYWORD
nonn
STATUS
approved