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A026701
Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026692.
0
1, 3, 7, 15, 33, 75, 167, 361, 791, 1773, 3931, 8539, 18737, 41853, 92693, 201871, 443343, 988491, 2187965, 4772629, 10487105, 23354405, 51673669, 112840057, 248040133, 551900067, 1220786323, 2668013885, 5866328943
OFFSET
0,2
CROSSREFS
Sequence in context: A146654 A363503 A193641 * A249512 A140498 A136029
KEYWORD
nonn
STATUS
approved